题目内容

What would have happened if the team had been an American team?They would have been annoyed and wouldn’t have waited for more than ____________.

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How do you understand the title of the passage Punctuality Pays?Being punctual will ____________ sooner or later.

稳压管是一种特殊的二极管,它通常工作在反向击穿状态。

A. 对
B. 错

整流的目的是____.A.将交流变为直流 B.将高频变为低频 C.将正弦变为方波

A. 将交流变为直流
B. 将高频变为低频
C. 将正弦变为方波

直流稳压电源中滤波电路的目的是_____.A.将交流变为直流B.将高频变为低频 C.将交,直流混合量中的交流成分滤掉

A. 将交流变为直流
B. 将高频变为低频
C. 将交,直流混合量中的交流成分滤掉

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