水底电缆单独充气,常年水深在5~10m时,日常保持气压应在()KPa之间。
A.50~70
B.70~90
C.100~120
D.100~180
参考答案:D
疟原虫感染人体的阶段为
A.子孢子B.肝细胞内的休眠子C.配子体D.卵囊E.红细胞内的裂殖子
——Will $200 ____ the cost of the damage?
——I’m afraid not. I need at least $100 more.
A.do
B.include
C.cover
D.afford