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【简答题】
锅炉在点火之前___以防发生冷爆危险。
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反馈参考答案：
举一反三
【单选题】The French pianist has not decided yet which orchestra ______.
A.
is to work with
B.
to work with
C.
should work with
D.
he will work
【简答题】Which company does he work in at present? ________________.
【简答题】Which company does David Stevenson work for?
【简答题】Which department does Simon Winters work in?
【简答题】Which company did the writer wish to work for? ______________________.
【简答题】曲线y=x 3 -1在点(1，0)处的切线斜率为______．
【简答题】In which of the following ways does the handgrip work?
【简答题】Which company does she work for?
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