题干
The coach,
because of the driver’s carelessness, was __________ and crashed over the cliff on such a cold December morning.
because of the driver’s carelessness, was __________ and crashed over the cliff on such a cold December morning.
A：in support
B：out of control
C：in charge
D：at the mercy
答案(点此获取答案解析）
B
样的零件，第一台出废品的概率是
，第二台出废品的概率是
．加工出来的零件堆放在一起．若第一台加工的零件是第二台加工的零件的2倍，则任意取出的零件是合格品的概率是 （ ）
