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【单选题】
四冲程柴油机中气阀重叠角是指在上止点前后，进、排气阀＿＿＿。A.
进开排关
B.
排开进关
C.
进开排开
D.
进关排关
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】简述注射铁剂的护理
【简答题】发动机润滑油的功能有哪些?机油品质的检验方法?
【单选题】When he caught a _______ of his girl-friend in the rain, Jack asked the taxi driver to stop to pick her up.
A.
harbour
B.
kettle
C.
glimpse
D.
scale
【单选题】The patient was making good progress but suffered a ______ when he caught a cold.
A.
setoff
B.
set-in
C.
setdown
D.
setback
【单选题】When he caught a ( ) of his girl-friend in the rain, Jack asked the taxi driver to stop to pick her up.
A.
glance
B.
peep
C.
glare
D.
glimpse
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