题目内容

Fill in the blanks with “await” or “wait”.1. They were _____ the birth of their first child.2. I have been for her for an hour at the bus stop.3. We shall _ hearing further from them.or We shall ____ to hear further from them.

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Match the verbs with their explanations.

电缆的最高工作电压不得超过其额定电压的( ) 倍。

A. 1
B. 1.05
C. 1.1
D. 1.5

敷设电缆时，应防止电缆扭伤和过分弯曲，橡胶或塑料绝缘裸铅包电缆弯曲半径可按电缆外径( ))倍计算

A. 6
B. 8
C. 15
D. 20

直埋电缆敷设于非冻土地区时，电缆埋置深度应符合下列规定：电缆外皮至地面深度，不得小于（）m。

A. 0.3
B. 0.5
C. 0.7
D. 1