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【判断题】
低温下发动机功率降低是因为：气温低时由于燃油雾化性下降，可燃混合气质量与燃烧不良。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】— I feel ______ a pity that I didn't attend Professor Smith's lecture. — You really should have. [ ]
A.
this
B.
it
C.
that
D.
one
【单选题】Desperation, hunger, thirst, and resentment all make it more likely that people will______a more powerful figure who promises them help and/or salvation.
A.
be prone to
B.
give in to
C.
live up to
D.
put an end to
【单选题】In desperation, Mrs. Jones ________ an operation on her right knee to relieve the pain.
A.
subordinated to
B.
B) submitted to
C.
C) was obedient to
D.
D) submitted
【简答题】换向阀有哪几种控制方式？换向阀的位和通各表示什么意思。
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