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【判断题】
极谱分析中使用的底液一般是由支持电解质、极大抑制剂、除氧剂和其他有关试剂(如缓冲剂、配位剂等)组成,它是为了消除干扰,控制测定条件以获得良好的极谱波A.
正确
B.
错误
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【单选题】______ the point that we should be punctual the next day, our director left the meeting room ahead of time.
A.
Stressing
B.
Having stressed
C.
To stress
D.
Being stressed
【简答题】There __________ no time left, we had to change our plan. A) being B) had C) would be D) has
【单选题】There ______ no money left for our project, we had to change our plan.
A.
being
B.
had
C.
were
D.
are
【单选题】Hardly _____ the dormitory the next morning when we _____ we had left our map in the room. [ ]
A.
we left; realized
B.
did we leave; realized
C.
we left; did we realize
D.
had we left; realized
【单选题】There __________ no time left, we had to change our plan.
A.
being
B.
had
C.
would be
D.
has
【单选题】______ the increase of the material price, our offer has left us with small profit, we can not accept your counteroffer.
A.
As a result
B.
As a result of
C.
Result in
D.
Result from
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