当()时,不宜与对方握手。
A、当向某人道别时
B、当对方两手满是东西时
C、当向对方表达谢意时
D、向某人祝贺时
参考答案:B
—Did you pass the driving test?
—No.I ________ it,but I had little time practising.
A.could have passed
B.must have passed
C.can't have passed
D.shouldn't have passed
气缸盖安装完毕后,通常用()检查气缸的实际压缩间隙。
A、百分表
B、塞尺
C、压铅法
D、专用量具