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【单选题】
口服强酸中毒后可采用以下哪种方法急救A.
2.5%碳酸氢钠溶液洗胃
B.
药物或机械催吐
C.
口服2.5%氧化镁溶液
D.
50%硫酸镁导泻
E.
以上均不可
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【简答题】HXD3电力机车转向架二系采用()螺旋弹簧。
【单选题】--- I rang you at about ten, but there was no reply. --- Oh, that was probably _____ I was seeing the doctor. [ ]
A.
for
B.
why
C.
when
D.
how
【单选题】－ Must I show you how to operate themachine? － Oh, thank you. I __________ how todo it.
A.
had wondered
B.
would wonder
C.
was wondering
D.
did wonder
【单选题】— Jack and I will celebrate our 20th wedding anniversary next month. — Oh, ________________________
A.
cheer up!
B.
well done !
C.
congratulations!
【单选题】-You were not in when I came over to your house. -Oh, I ____________ for a friend from England at the airport.
A.
was waiting
B.
had waited
C.
am waiting
D.
have waited
【单选题】— I called you yesterday evening, but nobody answered the phone. — Oh, I a walk with my parents at that time.
A.
took
B.
was taking
C.
am taking
D.
take
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