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【多选题】
施工机械单价中第二类费用亦称可变费用，是指属于支出性质的费用。包括（）。A.
燃料动力费
B.
人工费
C.
养路费及车船使用税
D.
保险费及年检费
E.
经常修理费
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反馈参考答案：
举一反三
【单选题】Speaker A: Would you mind if I use your pen for a while? Speaker B :__________
A.
Yes. By all means.
B.
No. By no means.
C.
No. It' s my pleasure.
D.
No. Most unwillingly.
【简答题】将下列对数式改写成指数式 (1) (2)
【单选题】Which of the following is NOT a reason for the speaker to use language clearly?
A.
none of the above
B.
A speaker’s meaning must be immediately comprehensible because listeners are far from the speaker.
C.
A speaker’s meaning must be immediately comprehensible because listeners cannot turn to a dictionary to discover their meaning.
D.
A speaker’s meaning must be immediately comprehensible because listeners cannot reread an author’s words to discover their meaning.
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