如果一个模板声明列出了多个参数,则每个参数之间必须使用逗号隔开,每个参数都必须重复使用关键字( )。
A.const
B.static
C.void
D.class
参考答案:D
—Jack hasn't paid for the school things, has he?
—_______. His father will pay for him. [ ]
A. Yes, he has
B. No, he hasn't
C. Yes, he did
D. No, he didn't
气门上的接触痕迹过高,则应(),以降低气门座工作面。
A.用32o铰刀将气门座上部削去一部分
B.用60o铰刀将气门座下部削去一部分
C.用45o铰刀将气门座工作锥面削去一部分
D.用32o铰刀将气门座下部削去一部分