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问题 单项选择题

在纯比例作用控制系统中，比例度由大逐步调小，当系统出现等幅振荡时，这时的比例度称为（）。

A.最小比例度

B.最大比例度

C.临界比例度

D.等幅比例度

答案

参考答案：C

单项选择题

对于划分为损失类的贷款，应按贷款余额的( )计提专项准备金。

A．50%

B．75%

C．90%

D．100%
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选择题

—What did your teacher say this morning?

—She told us______.[ ]

A. why was Tom late for school again

B. whether we had too much homework

C. how she did come to school this morning

D. that we would have a test soon
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