干式煤气柜的活塞上部应备有()报警装置、()呼吸器。
参考答案:CO;空气
— Mum, do you mind my listening to music for a while?
— . But please listen to it with your earphone.
A.Yes, please
B.No, thank you
C.Not at all
D.Yes, I do
利用“口对口吹气法”抢救因溺水而暂时停止呼吸的人时,需要清除患者口、鼻内的污物,其目的是( )
A.使呼吸道畅通
B.讲究卫生
C.便于吹气
D.使患者舒适