()是最基本和最广泛的切削方法。
参考答案:车削
Mary __________ the job he offered to her, but she didn’t.
A.can’t take
B.ought to have taken
C.should take
D.must have taken
《船上油污应急计划》用于帮助船员处理意外排油,其主要目的是制定必要的措施,以控制或减少排放和减轻其影响。