检漏继电器应上架安设在防爆总开关的(),保护总开关所控制的线路。
A、电源侧
B、负荷侧
C、高压侧
参考答案:B
―What do you think of the song ? ―_________ .
A.It sounds sweet
B.I like music very much
C.I don't know what it is about
D.It was a pleasure
慢性阻塞性肺疾病稳定期氧疗,吸氧时的氧流量为()
A.2.0~3.0L/分钟
B.25%~35%
C.28%~30%
D.1.0~2.0L/分钟
E.3.0~4.0L/分钟