题目内容

It was ___________ of you not to play the piano while I was having a sleep.

A. considerate
B. conservative
C. considerable
D. consistent

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She is so __________ that she cried for days when her pet died.

A. sensitive
B. sensible
C. touched
D. impressive

实现电动机正反转只需要调换三相电源中的其中两相相线。

A. 对
B. 错

当使能输入端接通时,置位指令接通。

A. 对
B. 错

置位指令接通,则只有指定地址一个信号被置位。

A. 对
B. 错

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