Question Bank Source: Safety Production Simulation Examination Yitong Official Account Mini Program
2022 Mechanical Fitterman (Advanced) Job Certificate Questions are Mechanical Fitterman (Advanced) Exercise Questions New Version Exercise Bank! The 2022 Mechanical Fitter (Advanced) Re-training Question Bank and Simulation Examination are based on the new Examination Outline of Mechanical Fitter (Advanced). Mechanical fitter (advanced) exam simulation questions can be practiced at any time according to the production safety simulation exam.
1, [Single choice question] () is a separation bearing, and its inner ring (including tapered rollers and cage ) and outer ring can be installed separately. During installation and use, the radial and axial clearance of bearing can be adjusted, and the radial clearance and axial clearance of bearing can also be pre-interference installation. (C)
A, deep groove ball bearing
B, angular contact ball bearing
C, tapered roller bearing
D, thrust ball bearing
2, [Single choice question] () mainly increases the outer diameter and compensates for wear size. (C)
A, mechanical processing
B, extrusion method
C, expansion method
D, upsetting method
3, [Single choice question] () The inner and outer rings can be separated, making it more convenient to install and disassemble. (D)
A, deep groove ball bearing
B, angular contact ball bearing
C, tapered roller bearing
D, single-row centripetal short cylindrical roller bearing
4, [Single choice question] () As long as the eccentric distance between the rotor center and the stator center is changed, the output flow will change accordingly. (B)
A, double-acting vane pump
B, single-acting vane pump
C, vane pump
D, double-acting vane pump or single-acting vane pump
5, [Single choice question] () Contract refers to the contract concluded by the parties for the transfer of patent rights. (A)
A, technology transfer
B, technical service
C, technical consultation
D, technical development
6, [Single choice question] () has good cleaning ability for grease and water-soluble dirt, and is simple to prepare, stable and durable, non-toxic, and is not flammable and safe to use. (D)
A, gasoline
B, kerosene
C, diesel
D, chemical cleaning solution
7, [Single choice question] () During operation, magnetization is to first select the magnetization method based on defect characteristics and the shape of the specimen, and determine the magnetization current value based on the magnetization method, magnetic powder, material, shape, size, etc., so that the magnetic flux density of the effective magnetic field on the surface of the specimen reaches 80% to 90% of the saturated magnetic flux density of the specimen material. (C)
A, permeation detection
B, spectrum detection
C, magnetic powder detection
D, ultrasonic detection
8, [Single choice question] () is to prevent movement under stress when the working mechanism stays at any position and stops working. (B)
A, sequential action loop
B, lock loop
C, unloading loop
D, reversing loop
9, [Single choice question]() is the moral quality that every practitioner should possess. (C)
A, love your job and be dedicated, be loyal to your duties, be honest and trustworthy, be fair in your work, be law-abiding, be honest and dedicated to your work, serve the people, and contribute to the society
10. [Single choice question] () shows the working principle of the electrical control system, arrange the positions of each component according to the working principle and the order of action, and use unified symbols, words and drawing methods to represent the electrical system. (B)
A, equipment schematic
B, electrical schematic
C, mechanical schematic
D, control schematic
11, [Single choice question] () is suitable for DC motor with small capacity and infrequent startup.(C)
A, directly start
B, decompression start
C, start rheostat
D, autotransformer start
12, [Single choice question] 7K-15-8 type turbine air compressor, cools the rotor shaft, is equipped with (). (C)
A, front cooler
B, post cooler
C, intercooler
D, front and rear cooler
13, [Single choice question] The oil temperature of general hydraulic machine tools shall not exceed ()oC. (C)
A, 80
B, 70
C, 60
D, 50
14, [Single choice question] The grinding wheel frame of the universal cylindrical grinder has periodic vibrations relative to the workpiece head frame-tail seat system, which will cause the workpiece surface (). (A)
A, straight corrugated
B, spiral
C, roundness exceeds the difference
D, forming a drum shape
15, [Single choice question] The following operation is incorrect in the case of live job . (D)
A. Operations that may cause unidirectional grounding in a system with neutral point are likely to cause unidirectional grounding should be disabled. Reclosing gates
B. Operations that may cause unidirectional grounding in a system with neutral point are not validly grounding should be disabled. Reclosing gates
C. Operations that the work manager believes that it is necessary to stop reclosing gates
D. During the live operation, the equipment suddenly cuts off power. The dispatcher did not contact the work manager. He can reclose the gates themselves and force power transmission
16. [Single choice question] The following statements are not part of the quality management activities of the equipment repair team are (). (D)
A, propose activity topics
B, investigate the current situation
C, formulate a plan
D, improve labor productivity
17, [Single choice question] The two hole axis intersect at a 90° angle, one hole diameter is 20mm, and the other hole diameter is 30mra, the following is an incorrect process. (D)
A, use universal angle ruler and mandrel to detect whether the axis angle of the two holes is qualified
B, use wide seat angle ruler, mandrel and feeler gauge to detect whether the axis angle of the two holes is qualified
C, use dial table and mandrel to detect whether the axis angle of the two holes is qualified
D, use micrometer and mandrel to detect whether the axis angle of the two holes is qualified
18, [Single choice question] From the perspective of repair process, it is required to constantly summarize experience and reduce the rework and repetition of repair content with () and advanced processes. (D)
A, special
B, scientific
C, appropriate
D, simple
19, [Single choice question] The knife for processing quenched workpieces generally stipulates the subsequent wear height h=. (D)
A, 0. 6~0. 8mm
B, 0.8~1.0mm
C, 0. 3~0. 7mm
D, 0. 3~0. 35mm
20, [Single choice question] The purpose of the conclusion of a labor contract is (). (D)
A, convenient and fast
B, consider comprehensive
C, facilitate operation
D, legal
21, [Single choice question] Employees who terminate their labor contract shall notify the employer in the form of () 30 days in advance. (A)
A, written
B, oral
C, any
D, oral or written
22, [Single choice question] The contract is the civil legal act of both parties , and the conclusion of the contract must be attended by (). (A)
A, both parties
B, parties
C, related personnel
D, legal consultant
23, [Single choice question] After reasonably selecting metal materials for precision parts, you must choose a reasonable () according to the needs of the parts.(B)
A, processing technology
B, heat treatment technology
C, manufacturing technology
D, surface treatment technology
24, [Single choice question] In the mechanic operation, the combined image level precision leveling installation level is commonly used to measure the guide surface, reference plane () of various machine tools or various equipment, as well as the parallelism and perpendicularity of the relative positions of components, etc. (A)
A, straightness and flatness
B, parallelism and verticality
C, parallelism and straightness
D, flatness and verticality
25, [Single choice question] When detecting the verticality error of the horizontal guide and longitudinal guide of the outer cylindrical grinder bed, first use the single V-shaped guide of the scraped horizontal guide as the reference, so that the working face of the box corner ruler is parallel and fixed. Then measure the error of the working surface perpendicular to the square angle ruler of the longitudinal guide rail, which is the verticality error of the two groups of guide rails. (B)
A, straightness
B, parallelism
C, verticality
D, flatness
26, [Single choice question] In drilling processing, holes with a processing diameter below () millimeters are generally called small holes. (C)
A, 1
B, 2
C, 3
D, 4
27, [Single choice question] Sound level meter can be divided into () and ordinary sound level meter according to accuracy. (B)
A, general sound level meter
B, precision sound level meter
C, ultra-precision sound level meter
D, semi-precision sound level meter
28, [Single choice question] The following figure is a simple diagram for measuring the width dimension of the dovetail groove bottom surface. After measurement L=20mm, the diameter of the detection rod d=lkm, and the dovetail angle a=60°, then the width of the dovetail groove bottom surface B=mm. |
| (D )
A, 30.774.
B, 35.774
C, 42.321
D, 47.321
29, [Single choice question] The security inspection content includes checking whether workers have unsafe behaviors and unsafe operations, and whether () meets the safety requirements. (B)
A, various devices
B, actions during operation
C, various tools
D, installation method
30, [Single choice question] For a single equilibrium object affected by any force system of the plane, at most () independent equilibrium equation can be listed and three unknown quantities can be found. (A)
A, three
B, five
C, four
D, two
31, [Single choice question] The rules for live operations stipulate that live operations are not allowed in principle. In special circumstances, live operations must be approved by (), and reliable safety measures must be taken, and someone must be supervised during the operation. (A)
A, power engineer
B, engineer
C, safety officer
D, technician
32, [Single choice question] Commonly used hydraulic pump include gear pump, vane pump, () and screw pump . (A)
A, plunger pump
B, axial plunger pump
C, radial plunger pump
D, centrifugal pump
33, [Single choice question] There are 11 levels of balance accuracy, G0.4 is the highest, and () is the lowest. (C)
A, G0.4
B, G1600
C, G4000
D, G6000
34, [Single choice question] After (), part of it is dissolved into the pressure oil, and most of it forms bubbles floating in the pressure oil, making the pressure oil compressible, drives rigidity decrease, and crawling occurs. (B)
A, parts wear
B, air is mixed with hydraulic oil
C, mechanical loss is large
D, oil temperature is too high
35, [Single choice question] If the party is dissatisfied with the arbitration award, he may file a lawsuit with the people's court within the date of receipt of the arbitration award.(D)
A, 3
B, 7
C, 10
D, 15
36, [Single choice question] When a labor dispute occurs, () resolution refers to the two parties reaching a settlement agreement based on understanding. (B)
A, mediation
B, self-negotiation
C, arbitration
D, litigation
37, [Single choice question] When explaining various operations, the instructor should also explain in detail the relevant regulations on the handling of on-site accidents, so that students can firmly grasp the relevant knowledge of safe production. (A)
A, safety operating procedures
B, usage procedures
C, three major procedures
D, precautions
38, [Single choice question] Instructors should try to use () as an example and use it as the main teaching content so that students can learn and master it. (C)
A, the content specified in the national occupational standards
B, the content specified in the ISO standards
C, the typical products, machine tools and processes of this enterprise
D, all can be
39, [Single choice question] The intermediate cooler can be tested according to technical requirements, and the water chamber pressure requires ()MPa. (B)
A, 0.4
B, 0.3
C, 0.2
D, 0.1
40, [Single choice question] Electric contact heating and self-cooling quenching of the surface of the machine tool guide rail is used to heat the surface of the guide rail, and then the heat conduction of the guide rail itself makes the heated austenite quickly cool and convert it into martensite to achieve the purpose of local quenching. This quenching process is characterized by high wear resistance and small quenching deformation. (C)
A, acetylene flame
B, combustion coke
C, contact resistance
D, intermediate frequency induction furnace
41, [Single choice question] The machine tool hydraulic system has a large mechanical loss, which will cause the system (). (D)
A, crawling
B, vibration
C, pressure loss
D, oil temperature is too high
42, [Single choice question] When manufacturing mechanical parts, while requiring (), the advanced nature of process regulations must also be considered. (C)
A, reasonable time selection
B, reasonable equipment selection
C, reasonable process procedures
D, reasonable operation methods
43, [Single choice question] The purpose of manufacturing requirements of mechanical parts is to ensure that () meets all requirements of product patterns with the minimum production cost and the highest labor productivity. (B)
A, semi-finished
B, finished
C, component
D, assembly
44, [Single choice question] When checking the coaxiality of the axis of the outer bracket hole of the gear hobbing machine and the rotation axis of the workbench, in order for the inspection rod to smoothly enter the outer bracket hole, there must be a gap between them, and the gap value is ()mm. (C)
A, 0.02
B, 0.03
C, 0.04
D, 0.05
45, [Single choice question] The surface of wedge key has a slope of (). (D)
A, 0.07638888888889
B, 0.0486111111111111111111111111111111111111111
C, 0.055555555555555555555555
D, 0.1111111111111
46. [Single choice question] The function of the groove wheel mechanism is to convert the continuous rotation of the active member into intermittent rotation of the groove wheel, which is suitable for () occasions. (B)
A, low-speed
B, medium-speed
C, high-speed
D, various speed
47, [Single choice question] line ruler that measures the positioning accuracy of coordinate boring machine requires inspection () every year, and the correction value of the line ruler engraving is issued based on the inspection results for three consecutive years.(A)
A, primary
B, secondary
C, third
D, fourth
48, [Single choice question] The sealing volume () of the hydraulic pump is pressurized oil. (B)
A, from small to large
B, from large to small
C, change
D, exist
49, [Single choice question] In the hydraulic system, increasing the back pressure in () can greatly reduce crawling. (C)
A,
B in parallel with the pump,
C on the main oil circuit, return to the oil tank
D,
50 at the oil inlet cylinder, [Single choice question] When selecting lubricating oil in the hydraulic system, choose hydraulic oil viscosity () in winter and summer. (B)
A, same
B, low viscosity in winter, large viscosity in summer
C, large viscosity in winter, small viscosity in summer
D, try to be as large as possible
51, [Single choice question] The liquid particles suspended in the air are (). (C)
A, gas
B, steam
C, fog
D, smoke
52, [Single choice question] If the meshing gap of the exchange gears during operation, it will cause the knife holder to lift and lower (). (C)
A, slow
B, too fast
C, crawling
D, stuck
53, [Single choice question] The characteristics of environmental noise are (). (C)
A, easy to evaluate and temporary
B, dispersive and persistent
C, intangible and multiple
D, great harm and complex
54, [Single choice question] team economic accounting is mainly for equipment (). (C)
A, minor repair
B, medium repair
C, major repair
D, maintenance
55, [Single choice question] The following is not a principle of compiling safety technical measures (). (D)
A, normative
B, targeted
C, operable
D, synchronous
56, [Single choice question] Electro-hydraulic reversing valve is composed of (). (A)
A, solenoid reversing valve and hydraulic reversing valve
B, solenoid reversing valve and manual reversing valve
C, solenoid reversing valve and motor reversing valve
D, solenoid reversing valve and reversing valve
57, [Single choice question] The electric spark strengthening process makes the entire workpiece in a cold state and will not cause deformation, annealing , () phenomenon. (D)
A, thermal cracking
B, peeling
C, peeling or thermal cracking
D, peeling and thermal cracking
58, [Single choice question] The cylinder of the precision spindle journal, safe production simulation test pass, degree tolerance is ()mm. (D)
A, 0.004
B, 0.003
C, 0.002
D, 0.001
59, [Single choice question] The parallel glass plate of precision level is installed in front of the telescope, and can be tilted forward and backward, and through this rotation, the horizontal line of sight () can be translated. (C)
A, front and back
B, left and right
C, upper and lower
D, left and right or upper
60, [Single choice question] The () of precision parts measurement is the most critical technical issue in mechanical processing. (A)
A, accuracy and reliability
B, accuracy and equipment
C, technical requirements and accuracy
D, rationality and technical requirements
61, [Single choice question] In the throttling speed regulation circuit, () is used to supply oil. (A)
A, quantitative pump
B, variable pump
C, volume pump
D, centrifugal pump
62, [Single choice question] If (), the gear is shifted to correct the gear hobbing according to the negative height, and the pinion is shifted to correct the manufacturing according to the positive height.(C)
A, local wear
B, slight wear
C, severe wear
D, broken teeth
63, [Single choice question] The content of the quality management activities of the equipment repair team include (). (B)
A, new product development
B, Investigate the current situation
C, improve labor productivity
D, save water, electricity, solar
64, [Single choice question] The reason why motor overheat in the electrical system of the equipment is (). (D)
A, armature does not move
B, wiring falls off
C, shell is charged
D, phase missing motion
65, [Single choice question] In the electrical system of the equipment, the electromagnetic clutch coil supply voltage is insufficient, and should (). (C)
A, touch the phase line to the shell
B, shorten the action delay
C, increase the coil voltage to the rated value of
D, lengthen the action delay
66, [Single choice question] The overhaul process content of the equipment includes the adjustment process and technical requirements of (). (D)
A, transmission component
B, assembly
C, parts
D, key parts
67, [Single choice question] speed control valve is composed of a fixed difference pressure reducing valve and an adjustable flow valve (). (B)
A, parallel
B, series
C, series and parallel
D, series or parallel
68, [Single choice question] The team responsible for repair work is divided into two categories according to the nature of the work. (A)
A, repair and overhaul
B, repair and minor repair
C, repair and intermediate repair
D, minor repair and intermediate repair
69, [Single choice question] The reason why the bearing emits sharp whistle during work is. (A)
A, Bearing clearance is too small, poor lubrication
B, debris in the bearing
C, bearing rolling body or bearing ring rupture
D, bearing inner and outer ring grooves are worn and peeled
70, [Single choice question] When drilling, the verticality error of the workpiece processing surface and spindle can be detected using the optical gap method. (C)
A, ruler and feelter gauge
B, ruler and micrometer
C, right angle ruler and feelter gauge
D, right angle ruler and micrometer
71, [Single choice question] When drilling deep holes, it is difficult () and cutting fluid is not easy to inject into the cutting edge, causing the drill bit to wear faster, and even annealing and burning the drill bit. (B)
A, feed
B, cooling
C, chip removal
D, cutting
72, [Single choice question] When drilling intersecting holes, the feed volume between the holes and holes is about to be drilled through, or "safety production simulation test one pass" is used to use manual feed to avoid breaking the drill bit or causing the hole to skew. (B)
A, enlarge
B, reduce
C, keep unchanged
D, continuous
73, [Single choice question] The process of electric spark of parts is a process of removing metal through the () effect on the surface of the workpiece by using the principle of discharge processing. (B)
A, low-energy electric spark
B, high-energy electric spark
C, electrical atom
D, electrical energy
74, [Single choice question] When scraping moving parts of high-precision and high-speed equipment, the bed should be placed reliably, and the () supported is uniform, and looseness is not allowed during the scraping process. (D)
A, steel horn
B, flat horn
C, oblique horn
D, adjustable horn
75, [Single choice question] The structure of high-speed ball screw nut pair is often used.(B)
A, internal circulation cannula-type
B, external circulation cannula-type
C, internal and external dual circulation
D, internal circulation inverter-type
76, [Single choice question] The rack under the workbench of gantry planer has poor contact with the helical gear of the gear box. The meshing contact area between the rack and the helical gear can be checked by the () method. (C)
A, sensitizer method
B, lead compression method
C, coloring method
D, measurement method
77, [Multiple choice question] () The temperature of the rotor shaft of the 7K-15-8 turbine air compressor is within 200oC. (×)
78. [Multiple choice question] () Repair and assembly method is suitable for single-piece and small-scale production and high assembly accuracy. (√)
79. [Multiple choice question] () The direct purpose of formulating emission standards is to control the emission of pollutants and meet the requirements of environmental quality. (√)
80. [Multiple choice question] () In all speed operation tests, the working mechanisms of the machine tool should be stable and normal, without obvious impact vibration and periodic noise. (×)
81. [Multiple choice question] () The series start-up rheostat in the armature circuit is suitable for DC motors with small capacity and infrequently started. (√)
82. [Multiple choice question] () The lines or equipment that have been hung with warning signs are not allowed to be dismantled at will. (√)
83. [Multiple choice question] () Both parties agree that they can change labor contract . (×)
84. [Multiple choice question] () Technical service contract refers to a contract concluded by the parties to solve specific technical problems for the other party with technical knowledge. (√)
85. [Multiple choice question] () Replacing a small number of vulnerable parts is not the work content of secondary maintenance of mechanical equipment. (×)
86. [Judgement Question] () The hydraulic system load test is performed first at a higher than the maximum load. Only after everything is normal can the maximum load test be performed. (×)
87. [Multiple choice question] () The team's economic accounting, whether it is project contracting or the assessment of total working hours of a single unit, or completing tasks according to plan and economical, requires reducing costs, improving quality, and shortening repair cycles as the team's production goals. (√)
88. [Judgement Question] The construction unit should conduct daily safety education and training for practitioners based on seasonal construction requirements and safety production situation. (√)
89. [Multiple choice question] () The principle of team quality management topic selection is to first choose the topics that are easy to see around, because everyone is more familiar with such topics, and "safety production simulation exam one-point pass" is easy to solve. (√)
90. [Multiple choice question] () The electro-hydraulic reversing valve is composed of a combination of an electromagnetic reversing valve and a hydraulic reversing valve. (√)
91. [Multiple choice question] () Electroplating is to form a metal plating layer on the metal surface to compensate for the wear of the parts surface. (×)
92. [Multiple choice question] () When the precision spindle circle beats more than 0.001mm, or there are heavier scratches, it can be ground first and then grind, or it can be restored by high-precision grinding. (×)
93. [Multiple choice question] () The magnification of the precision level telescope is no less than 30 times. (×)
94. [Multiple choice question] () Insulation utensils must undergo pressure resistance test once a year, and are not allowed to be used without a factory certificate. (×)
95. [Multiple choice question] () The work content of the maintenance team includes daily equipment maintenance, maintenance, fault repair and minor repairs. (√)
96. [Multiple choice question] () The primary and secondary bellows of the cast iron cupola should be connected to the on-site C362 air volume and air pressure automatic control instrument. (√)
97. [Multiple choice question] If the plane of the mirror is perpendicular to the optical axis of the objective lens, and returns to the "cross image" of the reticle, that is, it is proved that there is no error in the guide rail. (√)
98. [Judgement Question] Scratch of the crankshaft journal is generally caused by burn bearing . When the scratch is not serious, the surfacing method can be used for repair.(×)
99. [Multiple choice question] Poor rigidity of the system drive will cause "crawling" failure of the hydraulic system. (√)
100. [Multiple choice question] When drilling inclined holes, the holes are often scraped, destroying the flatness of the end surface of the hole. (√)
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