实行确认制是防止发生（）的有效措施。
A.违章指挥
B.冒险作业
C.误操作
D.职业危害
参考答案：C
Please remain________; the winner of the prize will be announced soon.[ ]
A. seating
B. seated
C. to seat
D. to be seated
5.7平方分米=______平方厘米；9.01吨=______吨______千克．
