-32的底数是______;结果是______.
-32的底数是3,结果是-9.
矿山企业要对()等一些危害安全的事故隐患采取预防措施。
A.低温
B.粉尘;有毒物质;放射性物质
C.冲击地压;瓦斯突出;井喷
D.瓦斯爆炸;煤尘爆炸
According to the facts ,he cannot be possibly guilty. [ ]
A.in my possession
B.in my profession
C.in the procession
D.in the provision