题目内容

发生水击现象的物理原因主要是由于液体具有惯性和压缩性。

A. 对
B. 错

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并联管路各管段的水头损失不相等。

A. 对
B. 错

紊流射流的动力特征是各横截面上的动量相等。

A. 对
B. 错

Complete the following sentences with the words in brackets. Change the form if necessary.1) If this issue cannot be solved properly, it may affect the long-term _______ of the overall economic development. (sustainable)

Now that two of her three successors have been female, the phrase “Madam Secretary” is no longer a _____.(novel)

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