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【单选题】
By saying 'Stevie soon graduated from toy instruments to real instruments', the author means that________
A.
Stevie finished tiis study at a toy instruments school
B.
Stevie began to study in a real instruments school
C.
Stevie gave up all his toy instruments and began to buy many real instruments
D.
Stevie started to play real instruments
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参考答案:
举一反三
【判断题】在四 冲程发动机中是不是压缩比越高就一定越好。
A.
正确
B.
错误
【简答题】A.Finns and Canadians are both not concerned with the life outside their continent. B.The two countries have some similar physical appearance. C.The two countries are both very cold and have a lot of ...
【单选题】在100kPa和20°C时,从水面收集28.4ml的氢气,干燥后氢气的体积是 已知在20°C水的饱和蒸气压p(H 2 O)=2.33kPa
A.
27.74
B.
287
C.
26.18
D.
23.6
【简答题】发动机的压缩比越大,发动机所发出的功率就越高,故发动机的性能就越好吗?试说明原因。
【单选题】Americans and Canadians can understand each other ___ they don’t speak the same kind of English.
A.
now that
B.
even if
C.
as if
D.
only if
【单选题】20°C水的饱和蒸气压( )100°C水的饱和蒸气压
A.
高于
B.
等于
C.
低于
D.
有时高于,有时低于
【判断题】压缩比越高则表明发动机动力性越好
A.
正确
B.
错误
【简答题】The Canadians plan to ____________________ more food to southern Somalia.
【单选题】_____ on-going division between English-speaking Canadians and French-speaking Canadians is _____ major concern of the country. [     ]
A.
The; 不填
B.
The; a
C.
An; the
D.
An; 不填
【判断题】因压缩比较高,发动机的热效率较大,故压缩比越高越好。
A.
正确
B.
错误
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