下列药物没有气道扩张作用()
A.氟烷
B.N20
C.吗啡
D.雾化利多卡因
E.阿托品
参考答案:C
自动喷水灭火系统主要由洒水喷头、报警阀组、水流报警装置(水流指示器或压力开关)等组件,以及管道、供水设施组成。
he new highway took most of the traffic from the old road and Mr.Hanson’s motel business. [ ]
A.came to an end
B.brought to an end
C.put an end to
D.drew an end to