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【单选题】
下面关于离合器后备系数 的描述错误的是( )。A.
当发动机后备功率较大、使用条件较好时,β可选取小些;
B.
发动机缸数越多,转矩波动越小,β可选取小些;
C.
当使用条件恶劣,需要拖带挂车时,为提高起步能力,β取大些;
D.
采用汽油机时,选取的β值柴油机大些;
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【单选题】Which would you like, a cup of tea or a glass of milk? ______. I think I’ll just have a glass of water.
A.
Both
B.
Neither
C.
None
D.
Either
【简答题】磁介质均匀磁化时,磁化强度与磁化电流有什么关系?写出它们的关系式。
【单选题】Which would you like, a cup of tea or a glass of milk? ____, thanks. I think I'll just have a glass of water.
A.
None
B.
Neither
C.
Both
D.
Either
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【单选题】I strongly object ____ like a child. A. to be treated B. of being treated C. to being treated D. of treating
A.
to be treated
B.
of being treated
C.
to being treated
D.
of treating
【单选题】It is so small _________it is put together chemically.
A.
and
B.
so
C.
that
D.
because
【单选题】The internal part of the boiler, if found _____, has to be chemically washed by yard.
A.
deformed
B.
rusted
C.
cracked
D.
scaled
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