设集合M={长方体},N={正方体},则M∩N=( )
A.M
B.N
C.∅
D.以上都不是
∵集合M={长方体},N={正方体},
∴M∩N=N
故选:B.
堆载预压法和真空预压法加固软土地基的工艺流程中,相同的工序有()。
A.铺设砂垫层
B.打设塑料排水板
C.挖密封沟
D.铺膜、覆水
E.卸载
– Which of the two coats will you take?
– I will take ________. One is for my brother and the other is for myself.
A.either
B.all
C.both
D.neither