若紧急逃生呼吸器气瓶内的压力低于工作压力的()应进行检查或充气.
A.90%
B.92%
C.95%
参考答案:B
I want to go to a _____________ to buy something for my son.[ ]
A. toys shop
B. sports shop
C. shoe's shop
D. books shop
吴三桂“冲冠一怒为红颜”的爱妾叫陈圆圆。