Question bank source: Production Safety Simulation Examination Yitong Official Account Mini Program
2022 Pressure Welding Job Certificate Question is the pre-test question bank! The 2022 Pressure Welding Operation Certificate Examination Questions Simulation Examination Platform Operation is compiled based on the latest textbooks for pressure welding. The actual test questions of the pressure welding test pass the first chapter of the production safety simulation test.
1, [Single choice question] ISO14000 is (). (B)
A, occupational health and safety management standard
B, international environmental management standard
C, international welding management standard
2, [Single choice question] The following is not a feature of the tube ultrasonic generator (). (B)
A, reliable and stable performance
B, high efficiency
C, high power
3, [Single choice question] The following is not the main electrical components in the control box of the steel bar electric slag pressure welding machine control box is (). (B)
A, contactor
B, power switch
C, control transformer
4, [Single choice question] Among the following materials, it is usually not suitable to use ultrasonic welding (). (C)
A, semiconductor
B, plastic
C, steel
5, [Single choice question] The largest flash point among the following liquids is (). (B)
A, methanol
B, tung oil
C, ethanol
6, [Single choice question] Among the following components, the necessary attachments on the welding fixture monitor of the steel bar electric slag pressure welding machine are (). (A)
A, ammeter
B, secondary voltmeter
C, time display
7, [Single choice question] The measure that does not belong to preventing electric shock accidents is (). (C)
A, electric box doors should be locked, keep the internal lines neat, and fuses should be configured according to regulations. Strictly configure
B. If the distance between the building or scaffolding and the outdoor high-voltage line is too close, a protection network
C should be added according to the specifications. The construction site can build mechanical equipment slightly higher than the standard height
8. [Single choice question] Compared with traditional friction welding and other welding methods, the advantages of friction stir welding are (). (A)
A, stable quality, high repeatability,
B, filler material
C, protective gas
9, [Single choice question] In order to ensure welding quality, no matter when supplying power to a single or multiple resistance welding machines , the specified total voltage drop is not exceeding ()%. (B)
A, 5
B, 10
C, 7
10, [Single choice question] Accident hazards do not include (). (C)
A, fire
B, poisoning
C, correct use of equipment
11, [Single choice question] The electric shock phenomenon caused by the human body directly contacting the charged conductors of electrical equipment and lines is called (). (C)
A, indirect contact electric shock
B, non-contact electric shock
C, direct contact electric shock
12, [Single choice question] The order in which three-phase voltage or maximum current appears is called (). (C)
A, positive order
B, reverse order
C, phase order
D, positive phase
13, [Single choice question] The following cannot protect direct contact electricity (). (A)
A, install high current socket
B, install leakage switch
C, install residual current action protector
14, [Single choice question] The following statement about diffusion welding is wrong ().(B)
A. Diffusion welding of the same material usually refers to diffusion welding in which two metals of the same type without the intermediate layer are directly in contact with each other
B. Solid phase diffusion welding refers to diffusion welding method in which the base material and the intermediate layer do not melt or produce liquid phase during the welding process
C. Diffusion welding of the same material refers to diffusion welding of different metals or metals with non-metals such as ceramics and graphite
15. [Single choice question] Regarding the general regulations on safe production of brazing operations, the correct statement is (). (B)
A. All handle wires and ground wires can be mixed with oxygen , acetylene hose
B. Carefully check whether the equipment and utensils are good and safe, check whether the ground wire of the metal shell of the brazing equipment meets the safety requirements. It must not be loose or falsely connected
C. You can drink appropriately to keep warm before taking up the job
16. [Single choice question] The less deformation degree of cold press welding , then (). (B)
A, the worse the cold press welding property
B, the better the cold press welding property
C, the moderate cold press welding property
17, [Single choice question] The deformation characteristics of the cold press welding process are (). (A)
A, plastic deformation
B, high temperature deformation
C, elastic deformation
18, [Single choice question] Heating can enhance the () of atom . (A)
A, kinetic energy
B, thermal energy
C, potential energy
19, [Single choice question] The time for workers to undergo a health examination should be regarded as (). (B)
A, take leave
B, normal attendance
C, absent from work
20, [Single choice question] In pulse circuit , the transistor of ( ) should be selected. (B)
A, strong amplification ability
B, fast switching speed
C, high maximum power dissipation of the collector
D, cheap
21, [Single choice question] The material that can produce good welding with copper alloy through explosion welding is (). (C)
A, carbon steel
B, stainless steel
C, nickel alloy
22, [Single choice question] Conditions where combustible gases are prone to mix with air do not include (). (C)
A,
B, poor indoor ventilation
C,
23 outside the container equipment
23, [Single choice question] The concentration of combustible steam and air can often reach the explosion limit does not include (). (A)
A, good indoor ventilation
B, poor ventilation of liquid fuel container
C, poor ventilation of pipeline
24, [Single choice question] The relationship between the vibration direction of the sound electrode and the surface of the weldment during plastic ultrasonic welding is (). (A)
A, vertical
B, parallel
C, intersecting
25, [Single choice question] For metals with good plasticity and not strong deformation and hardening, when the length of the workpiece protruding is less than or equal to its diameter or thickness, it can (). (C)
A, multiple top forgings welded to
B, secondary top forgings welded to
C, primary top forgings welded to
26, [Single choice question] When induction high-frequency welded pipes, in order to reduce the invalid current, () needs to be placed in the tube blank. (B)
A, electrode contact
B, impedance
C, induction ring
27, [Single choice question] The limitations of friction stir welding are reflected in (). (B)
A, flexible
B during arc welding operation, large mechanical force during welding
C, less wear of the stirring welding head
28, [Single choice question] When the plate thickness is 13mm, the top forging of the plastic pneumatic welding joint is ()mm.(A)
A, 10
B, 6
C, 13
29, [Single choice question] Gas flame welding uses combustible gases (such as acetylene, liquefied petroleum gas , hydrogen, propane , etc.) to react violently with () in a suitable proportion. (A)
A, oxygen
B, air
C, nitrogen
30, [Single choice question] The properties of sodium hydroxide do not include (). (C)
A, corrosive
B, water absorption
C, dehydrating
31, [Single choice question] A fire that cannot be extinguished by water is (). (C)
A, Forest Fire
B, crude oil fire
C, fire occurs in places where a large amount of concentrated sulfuric acid and concentrated nitric acid
32, [Single choice question] The general principle for choosing the size of welding pressure is (). (B)
A, principle of plastic deformation of the joint surface
B, principle of creep deformation of the joint surface
C, principle of elastic deformation of the joint surface
33, [Single choice question] The temperature range of the melt pool of electroslag welding is about (). (B)
A, 1400℃ to 2100℃
B, 1700℃ to 2000℃
C, 1900℃ to 2100℃
34, [Single choice question] Mass traces () appear immediately after the electro-signature electric shock. (C)
A,
B,
C, not necessarily
35, [Single choice question] The lighting voltage of the welding operation should not be higher than ()V. (B)
A, 32
B, 36
C, 38
36, [Single choice question] When obtaining the "cathode crushing" effect, the () "Safety Production Simulation Examination Passing One-Time Pass". (A)
A, DC reverse connection
B, DC positive connection
C, AC power supply
37, [Single choice question] Before replenishing argon gas, the remaining gas pressure in the bottle should not be less than ()MPa. (A)
A, 0.05
B, 0.03
C, 0.07
38, [Single choice question] The surface of the skin after electrocution becomes rough and hard, causing the skin tone to turn gray and yellow is (). (C)
A, brass
B, pure copper
C, lead
39, [Single choice question] During ultrasonic welding, when the static pressure, amplitude increases and the material thickness decreases, the ultrasonic welding time can be taken (). (B)
A, higher numerical
B, lower numerical
C, unchanged numerical
40, [Single choice question] During ultrasonic welding, due to the increase of compressive stress, the area of plastic deformation at the contact and the connection area increase, so the strength of the joint (). (C)
A, unchanged
B, lower
C, increase
41, [Single choice question] Those with mild electric shock will not appear (). (A)
A, dilated pupil
B, short-term pale face
C, weak limbs
42, [Single choice question] When using the FF-2 type spot welding machine capacitor energy storage welding, use a pure copper scraper to carefully scrape off the insulating paint layer on the surface of the turns of the turns with a pure copper scraper, put a cable paper tape under the turns, and insert () between the paper tape and the turns. (C)
A, gold-platinum alloy foil
B, gold-silver alloy foil
C, gold-nickel alloy foil
43, [Single choice question] Reused hazardous chemical packaging containers should be inspected and recorded before use, and their records should be retained for at least () years. (C)
A, 1
B, 3
C, 2
44, [Single choice question] The types of major hazardous sources do not include ().(A)
A, employee dormitory
B, flammable, explosive,
C, storage tank area of harmful substances
45, [Single choice question] When the steel bar electric slag pressure welding is used, the inlet and outlet lines of the power supply are connected to the same end of the device, and it is regarded as a safety hazard for crossing the bridge box. (C)
A, does not affect
B, does not exist
C,
46, [Single choice question] The casting must be preheated before welding, and the temperature of thermal welding is generally (). (A)
A, 600℃ to 700℃
B, 500℃ to 600℃
C, 400℃ to 500℃
47, [Single choice question] The best way to prevent the harm of poisons is (). (C)
A, wear work clothes
B, wear respiratory equipment
C, use non-toxic or low-toxic substitute
48, [Single choice question] Thermal conductivity of high-carbon steel (). (B)
A, good
B, poor
C, general
49, [Judgement Question] The provisions of " Occupational Disease Prevention and Control Law of the People's Republic of China " adhere to the principle of prevention as the main and combination of prevention and control in occupational disease prevention and control, and implement classified management and comprehensive governance. (√)
50. [Multiple choice question] The brazing seam of an rocket engine is 750m long and can be brazed in one go. (√)
51. [Multiple choice question] In order to ensure the quality of overlap cold-pressed welding joints, spot checks should be used to carry out anti-peel tests during production. (√)
52. [Judgement Question] acetylene generator must not be filled with particle size exceeding 80mm calcium carbide . (√)
53. [Multiple choice question] Workers engaged in work with occupational disease hazard factors have the right to obtain occupational health examinations, but they do not have the right to understand the results of their health examinations. (×)
54. [Multiple choice question] From the broad sense of production safety simulation exam, major hazard sources refer to dangerous sources that may lead to major accidents. (√)
55. [Judgement Question] When welding low carbon steel , there are no special requirements for welding power supply. AC and DC arc welding machines can be used for full-position welding, and the process is simple. (√)
56. [Multiple choice question] Cold-pressing welding is a connection method that allows the workpiece molecules to get close to each other to obtain a firm press-extrusion joint. (×)
57. [Multiple choice question] The source of danger can be a thing or a person. (√)
58. [Multiple choice question] Combustible liquids belong to the third-level dynamic range. (×)
59. [Multiple choice question] The management of noise mainly starts from three aspects: eliminating and weakening noise sources in production; controlling the propagation of noise; and strengthening personal protection. (√)
60. [Multiple choice question] On the front panel of the steel bar electric slag pressure welding machine, there are generally welding current indications or welding steel bar diameter indications. For some AC arc welding machines, mark the conversion switch Ⅰ as welding rod arc welding, and mark the Ⅱ as electroslag pressure welding, which makes the operator more convenient. (√)
61. [Judgement Question] Training institutions shall conduct safety technical training for special operators in accordance with the training outline of special operators formulated by the State Administration for Safety Supervision and the Coal Mine Safety Supervision Bureau and the Training Outline of special operators for coal mines. (√)
62. [Multiple choice question] A large amount of acid and alkali, production safety simulation test. One point of view. If you leak, you only need to use sand and soil. You can mix with acid and alkali neutralizing substances. You can also rinse with a large amount of water, dilute the water and put it into the wastewater system. (×)
63. [Multiple choice question] austenite has low strength and hardness, and is very plastic and tough. (√)
64. [Multiple choice question] Butt cold press welding can weld materials with simple cross-sectional shapes, usually used for material lengthening or manufacturing bimetal transition joints. (√)
65. [Multiple choice question] The most commonly used acid and alkali in industry is commonly known as "two acids and two alkalis". (×)
66. [Multiple choice question] Commonly used acids and alkalis in industries should be operated in a closed manner during use and pay attention to ventilation.(√)
67. [Multiple choice question] The reference magnetic field of high-frequency electromagnetic field hygiene currently piloted in my country is 3A/m. (×)
68. [Multiple choice question] Friction stir welding is simple to operate and can be used to weld a variety of materials, including those that are extremely difficult to weld. After welding, high-quality welds without defects such as pores and cracks can be obtained. (√)
69. [Multiple choice question] The industrial name of sodium carbonate without crystallization water is heavy alkali. (×)
70. [Multiple choice question] According to the different welding processes, arc welding can be divided into automatic welding, semi-automatic welding, argon arc welding and manual welding . (×)
71. [Multiple choice question] The welding of the oil tank and the water tank generally adopts the spot welding method. (×)
72. [Multiple choice question] When an oil catches fire, use foam, carbon dioxide or dry powder fire extinguisher to extinguish. (√)
73. [Multiple choice question] Foam fire extinguishing agent can be divided into three types according to the foam generation mechanism. (×)
74. [Multiple choice question] When hot isostatic pressure diffusion welding, when the surface to be welded is in the cavity formed by the two welded workpieces themselves, the surroundings of the workpiece can be sealed and welded without wrapping them. (√)
75. [Multiple choice question] Each area in the welding heat-affected zone has different performances compared with the base material, but its structure is basically the same. (×)
76. [Multiple choice question] Welding residual stress is generally generated in welding structures, which can easily lead to delayed cracks. Therefore, important welding structures should be subject to stress-removal after welding. (×)
77. [Multiple choice question] The safety operating procedures for explosive welding stipulate that two people should store and use the detonator and detonator from beginning to end. (×)
78. [Multiple choice question] The safety specifications for explosives for explosive welding require "safe production simulation exam": to prevent vapor from leaking into the workplace air. (√)
79. [Multiple choice question] Requirements in the safety specifications for transporting explosives for explosive welding: Vehicles should be equipped with corresponding varieties and quantities of fire-fighting equipment during transportation. (√)
80. [Multiple choice question] Explosion welding can weld the same, especially different metal materials. (√)
81. [Judgement Question] During ring welding, the coupling rod drives the lower sound pole torsional vibration. (×)
82. [Multiple choice question] Since friction welding saves electricity, no special treatment is required before welding of joints, no filling materials and protective gas are required during welding, and the processing cost is significantly reduced. (√)
83. [Multiple choice question] capacitor energy storage welding plays a very important role in the connection of aluminum-aluminum, aluminum-copper, and copper-copper conductors. Especially for aluminum-copper conductors that are more difficult to weld (conductors with a cross-section of not more than 50 square millimeter ), capacitor energy storage welding is one of the best choices whether it is the installation site or the manufacturing of prefabricated joints. (×)
84. [Multiple choice question] Changes in electrode pressure will change the contact area between the workpiece and the workpiece, and the workpiece and the electrode, thereby affecting the distribution of the current density line. As the electrode pressure increases, the total resistance in the path increases. (×)
85. [Multiple choice question] The impact of current on heat production is greater than that of both resistance and time. Therefore, during the welding process, it is a parameter that must be strictly controlled. (√)
86. [Multiple choice question] The penetration depth of the current is proportional to the square root of the frequency. (×)
87. [Multiple choice question] Nitrifying glycerin explosives have the advantages of not being afraid of moisture, good plasticity, and easy to form. (√)
88. [Multiple choice question] The basic principle of consumable friction welding is to consume material "weld rod" rotates and contact with the welded workpiece. Relying on the heat generated by friction on the contact surface, the materials on both sides of the bonding surface reach a thermoplastic state, and applying a forging pressure to achieve connection. (√)
89. [Multiple choice question] Occupational health examination is an important guarantee for implementing the obligations of employers and realizing the rights of workers in . It is the prerequisite for implementing the occupational disease diagnosis and identification system, and the basis of the social security system. It is conducive to protecting the health rights and interests of workers, reducing health damage and economic losses, and reducing social burdens.(√)
90. [Multiple choice question] Occupational health monitoring is for the purpose of prevention. According to the worker's occupational contact history, the health status of workers is continuously monitored through regular or irregular medical health examinations and the collection of health-related data, and analyze the relationship between changes in workers' health and occupational disease hazards in contact with, and promptly report the results of health examinations and data analysis to the employer and the worker themselves, so as to take timely intervention measures to protect the health of workers. (√)
91. [Multiple choice question] Occupational safety and health "safety production simulation test" Tongkang Management System (OSHMS) is a modern safety management model that emerged internationally in the late 1970s. (×)
92. [Judgement Question] During occupational disease examination, more than 5 practicing physicians who have obtained occupational disease diagnosis qualifications should have collective diagnosis. (×)
93. [Judgement Question] If the volume percentage of liquefied gas in the liquefied petroleum gas-oxygen mixture is 12.9%, the explosion sound is weak when it is burned and exploded. (×)
94. [Multiple choice question] Gas cylinders filled with gas are a source of danger. (√)
95. [Multiple choice question] The method to determine the symptoms of "fake death" of electric shock is to "see", "listen" and "try". "Look" means to observe whether the chest and abdomen of the electric shock have fluctuations; "Listen" means to use your ears to close the heart of the electric shock to hear whether he has a heartbeat; "Try" means to use your hands or small strips to test whether there is breathing airflow in the mouth and nose, and then use your fingers to gently press the carotid artery in the depression next to the Adam's apple with one side (left or right) if there is a pulsating feeling. (×)
96. [Multiple choice question] A continuous drive friction welding machine is usually composed of six parts, namely the spindle system, pressurization system, fuselage, chuck, control system and auxiliary devices. (√)
97. [Multiple choice question] Explosions can usually be divided into two categories: physical explosions and chemical explosions. (√)
98. [Multiple choice question] When using UR2-800 type welding machine capacitor energy storage welding, in order to maintain the same resistance value of aluminum and copper wires, the diameter of the copper conductor should be slightly larger than that of aluminum wires, for example, φ1.12mm aluminum wire and φ1.40mm copper wires are matched. (×)
99. [Multiple choice question] The overall plastic deformation of the parts using diffusion welding is very small. (√)
100. [Multiple choice question] The weldability of titanium alloy is similar to that of aluminum, and the process parameters of are also roughly the same. (×)
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