题目内容

压力容器或设备制成以后或经过长期使用后进行检修时,在交付使用前都必须进行(),试验的目的是检查()和焊缝()以及容器的()。试验通常有两种方法:()和()。

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There was a large crowd of demonstrators ____ against the war.

A. protecting
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At the first ____ of twelve everyone stopped for lunch.

A. sound
B. stroke
C. moment
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____ right now, she would not be late for the class.

A. Would she leave
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