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【单选题】
下列压缩比大小对柴油机影响的一个不正确论述是（）。A.
压缩比越小，启动性能越差
B.
压缩比增大，膨胀功增加
C.
压缩比增大，热效率增高
D.
压缩比越大，机械效率越高
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举一反三
【简答题】The other day I buy a pair of leather shoes in a shoe shop. The seller told me he would give “three guarantees” for the shoes. And only four days later, the shoes worn out. So I was angry and returned...
【单选题】“十三五”旅游业发展规划的主要任务中指出,到 2020 年,完成( )户贫困户 “ 改厨、改厕、改客房、整理院落 ” 的“三改一整”工程。
A.
2万
B.
20万
C.
50万
D.
100万
【单选题】—I told you that he would go abroad for further study. —Actually I had little doubt_____ it was true.
A.
whether
B.
since
C.
that
D.
if
【单选题】— I told you that he would come to see you. — Actually I had little doubt _____ it was true.
A.
whether
B.
that
C.
since
D.
if
【单选题】— I told you that he would come to see you. — Actually I had little doubt _____ it was true. [ ]
A.
that
B.
whether
C.
since
D.
if
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