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【简答题】
气门间隙是指发动机 下,当气门处于完全 状态时,气门与传动件(摇臂或)之间的间隙。
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举一反三
【单选题】Proposals usually appear in three forms: practical proposals,researched policy proposals and proposal speeches.
A.
对
B.
错
【单选题】听力原文：M: Do you know some forms of bank advances? W: There are three forms: overdrafts, personal loans and mortgages. Q: Which of the following is not a form. of bank advances? (13)
A.
Overdrafts.
B.
Mortgages.
C.
Personal loans.
D.
Letter of credit.
【简答题】A．Exactly at three o'clock. B．Around three o'clock. C．Before three o'clock. D．After three o'clock.
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