LNG槽车罐体真空绝热层的真空度每年检查（）次。 A.1 B.2 C.3 D.4

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问题单项选择题

LNG槽车罐体真空绝热层的真空度每年检查（）次。

A.1

B.2

C.3

D.4

答案

参考答案：A

选择题

________, I have never seen anyone who is as capable as David. [ ]

A. As I have traveled so much

B. As long as I have traveled much

C. Now that I have traveled much

D. Much as I have traveled

判断题

井口甲醇加注泵最大排量为0.7m3/h；外输甲醇加注泵最大排量为1m3/h。