话务机房的地面一般应铺设()。
A、普通磁砖
B、复合地板
C、木质地板
D、防静电地板
参考答案:D
The sentence "It's up to you" means "You are the person who ______."
A.makes the decision
B.is responsible
C.has the fight
D.is confident
再保险是指投保人与保险人直接签订保险合同而建立保险关系的一种保险。( )