Which is wrong with the Python module time introduction method?

• A.from time
• B.import time
• C.from time import *
• D.import time as t

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What is wrong about expectations and variances in the following options?

• A.Expectation and variance are both numerical characteristics of random variable
• B.expect to reflect the average level of random variable values
• C.Variance reflects the high degree of random variable and its mathematical expectation
• D.the greater the expectation, the smaller the variance

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The optimization method that does not belong to deep learning is .

• A.back propagation algorithm
• B.principal component analysis
• C.stochastic gradient descent
• D.momentum

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The functions commonly used in mathematical operations in Python are basically in the math and cmath modules.

• A.True
• B.False

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Generating a confrontation network is like a game system. The generator generates fake samples, and the discriminator judges whether it is true or false. Our ideal result is?

• A.The generator produces roughly the same samples
• B.The discriminator efficiently distinguishes the true and false samples generated by the generator
• C.The discriminator cannot distinguish the true and false samples generated by the generator
• D.The generator produces different samples

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