My sister wanted to know where________going. [ ]
A. I am
B. was I
C. I was
D. are you
答案:C
已知集合M={x|1<x<4},N={1,2,3,4,5},则M∩N=( )
A.{2,3}
B.{1,2,3}
C.{1,2,3,4}
D.{2,3,6}
路面混泥土中的单层钢筋网片应()。
A、事先安放
B、边浇混泥土边安放
C、浇完混泥土后压入
D、摊铺一层混泥土后安放,再摊铺上层混泥土