大修后锅炉的水压试验有什么规定?
参考答案:
大修后锅炉一般都要进行超水压试验,而且超水压为本锅炉额定压力的1.25倍。
I have absolutely no ________ the students who get caught cheating in exams even though they were seriously punished.
A.influence on
B.sympathy for
C.concern about
D.complaint about
轮对厂修、段修时,使用时间达到20年的国产RD2型40钢车轴轮对需退轮时,须()。
A.退轮检查
B.更换车轴
C.更换车轮
D.加工修理