题目内容

造成阀体泄漏的原因有____。

A. 管支架不良
B. 阀体有砂眼
C. 机械振动
D. 以上均不正确

查看答案

搜索结果不匹配？点我反馈

更多问题

Just give me five minutes to ______; I'm covered in oil.

A.clean myself through
B.clean out
C.cleaning
D.clean myself up

For five miles ________ the road was bordered with apple orchards.

A. end up
B. on end
C. to an end
D. in end

Nothing delighted the small boy more than to ______ his mother's handbag.

A. turn out
B. turn on
C. turned up
D. turn over

目前电站锅炉各项热损失中最大的热损失是（)

A. q2
B. q3
C. q4
D. q6