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1. The appropriate substances for separation of agarose gel electrophoresis are ().
A, protein
B, macromolecular nucleic acid
C, antibiotic
D, amino acid
Answer: 120V 30min
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A. Correct
B. Wrong
Answer: A
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A: Correct B: Wrong
Answer: Correct
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Answer: ["Special elution", "Nonspecific elution"]
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A . Big
B . Small
C . Approximate to 1
D . Approximate to zero
Answer: B
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QinShiHuangTerracotta Warriorswere built the guardians so that the huge underground empire of QinShiHuang, the first king of the QinDynasty.
Chinese people let the person in the same way during his life time.
Intermsofthehugessize of thetombs,Chinesemausoleumssymbolize sthe powerful fluence of the owners' underworld.
Inancient China, few grave good sands and artifacts accompanies the dead people into the underworld.
Answer: Qin Shi Huang Terracotta Warriors were built on the underworld.
Answer: Qin Shi Huang Terracotta Warriors were built on the underworld.
Answer: Qin Shi Huang Terracotta Warriors were built on the underworld.
The huge underworld is a big deal of Qin Shi Huang, the first king of the Qin Shi Huang. Chinese people give the same ability to overcome the same way during his life. Intermediates of the huge size of the tombs, Chinese mausoleum symbolizes the powerful fluence of the owners.
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gear couplings have the ability to compensate for the () offset of the two axes, so they are often used in heavy machinery with low installation accuracy requirements.
A. Radial
B. Axial
C. Angle
D. Comprehensive
Answer: D
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11. The following description of millimeter wave communication characteristics is incorrect.
A, wide available spectrum
B, large transmission loss, close to
C, easy to achieve miniaturization of RF devices, low device cost
D, low device cost
Answer: Low device cost
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Answer: Wrong
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b)
c)y=max{4
|x|-1
, x
2
}.
Answer: a) b) c), y+(1)=2,y-(1)=2ln2,y+(2)=8ln2 y-(2)=4; y+(-1)=-2ln2; y-(-1)=-2; y+(-2)=-4; y-(-2)=-8ln2;
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Answer: √
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Answer: height, width, depth
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