进入受限空间作业中发生中毒或窒息事件时,为参与应急救援,在给自己带上空气呼吸器时,应先()。
A.帮别人带上
B.充气
C.检查空气呼吸器压力及密封性
D.戴防毒面具
参考答案:C
---- The battery in my cell phone is running low.
---- I _____ that last night before we went to bed.
A.was noticing
B.have noticed
C.had noticed
D.would notice
生成性资源