党的十八届三中全会指出,深化安全生产管理体制改革,建立()体系,遏制重特大安全事故。
A.隐患排查治理
B.安全预防控制
C.网格化管理
D.政府主导
参考答案:A, B
—Excuse me. Which is the way ______ the post office, please?
—Sorry, I don't know. You can ask the policeman _______ help. [ ]
A. to; to
B. to; for
C. for; for
D. for; to
不属于材料费的内容有( )。
A.材料原价B.燃料动力费C.材料运杂费D.运输损耗费