机械时间定额不包括（）。
A．有根据地降低负荷下的工作时间
B．不可避免的无负荷工作时间
C．不可避免的中断时间
D．停工时间
参考答案：D
—I’m going to play soccer now.
—________. It’s raining heavily outside.
A．Good idea
B．It’s up to you
C．You’d better not
D．I have no idea
His car _____now, so he has to go to work on foot.
A．was repaired
B．repaired
C．repairs
D．is being repaired
