压缩空气含油量过大会造成的后果是（）
A、气量变大
B、气缸和气阀动作不灵敏
C、气阀动作过快
D、吹气压力低
参考答案：B
— How do you know that I've move here?
— _____ .I didn't tell anybody. [ ]
A. Only by mistake
B. Someone told me about it
C. Quite by accident
D. It's none of your business
患儿男，生后2天，出生体重为2400g。因吸入性肺炎入院，入院时患儿呼吸急促，口唇稍发绀。即置于辐射保暖床上抢救。
该患儿吸氧的流量应选择每分钟为（）
A.1L
B.2L
C.3L
D.4L
E.5L
