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【简答题】
我国安全电压的额定值分为哪几个等级?各是多少?
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反馈参考答案：
举一反三
【单选题】新生儿窒息清理呼吸道,错误的做法是
A.
胎头娩出后用手挤净或吸痰管吸净鼻咽部黏液及羊水
B.
断脐后仰卧于温暖的复苏台上
C.
用球形吸引器和吸引管吸出鼻咽部分泌物
D.
重度窒息在喉镜下气管插管吸净分泌物
E.
因很少用喉镜，需要时再送去
【单选题】It was not until Susan came back ______her close friends were waiting for him.
A.
which she knew
B.
which did she know
C.
that she knew
D.
that did she know
【单选题】She gazed at the immense expanse of the sea.
A.
extension
B.
very large area
C.
big gap
【单选题】新生儿窒息清理呼吸道,错误的做法是( )
A.
胎头娩出后用手挤净或吸痰管吸净鼻咽部黏液及羊水
B.
断脐后仰卧于温暖的复苏台上
C.
用球形吸引器或吸引管吸出鼻咽部分泌物
D.
重度窒息在喉镜下气管插管吸净分泌物
E.
因很少用喉镜,需要时再送去
【单选题】新生儿窒息清理呼吸道,错误的做法是
A.
胎头娩出后用手挤净或吸痰管吸净鼻咽部黏液及羊水
B.
断脐后仰卧于温暖的复苏台上
C.
用球形吸引器和吸引管吸出界咽部分泌物
D.
重度窒息在喉镜下气管插管吸净分泌物
E.
因很少用喉镜，需要时再送去
【单选题】Not until I came to China ______ what kind of a country she is.
A.
I knew
B.
I didn't know
C.
I did know
D.
did I know
【简答题】She gazed at ___________ (她水中的倒影).
【单选题】Not until John came to China what kind of country she is.
A.
did he know
B.
he knew
C.
he didn’t know
D.
he could know
【单选题】It was not until she came to see us ____ her mother was ill in bed.
A.
when we knew
B.
that did we knew
C.
that we knew
D.
that did we know
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