题目内容

NB/T47013.4-2015标准规定的水断试验,主要是用来检验水磁悬液对被检表面的润湿性能,只有出现裸露的“水断”表面,才可以开始磁粉检测。

A. 对
B. 错

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This is Ted’s phone. We miss him a lot. He ___ trying to save a child in the earthquake.

A. killed
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C. was killed
D. was killing

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A. are being painted
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C.are painted
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A. are not decided
B. have not been decided
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D. has not been decided

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A. was booked
B. had been booked
C. were booked
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