从试样表面去除多余的水洗型渗透液的最常用的方法是()。
A.用湿布擦洗
B.用水喷洗
C.放在自来水龙头下用流水冲洗
D.将试件浸入水中搅动清洗
参考答案:B
—I’m sorry. I wasn’t helpful when you were in trouble.
—Oh, ________. In fact, you did help me a lot.
A.thanks anyway
B.it doesn’t matter
C.of course not
D.sure you were
所谓设备整个寿命周期的活动全过程是指,从规划、设计、制造、安装、验收、使用、维修、改造直至()的全部过程。