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交流发电机结构图,它主要由 、 、前后端盖、风扇、整流器、元件板等组成
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举一反三
【单选题】The population of the earth()increasing fast. One third of the population here() workers
A.
is; are
B.
is; has been
C.
are; is
D.
is; was
【单选题】3*83评价蛋白质营养价值高低的主要指标是
A.
蛋白质的消化吸收及利用
B.
氨基酸模式及蛋白质的消化吸收
C.
氨基酸模式及蛋白质的含量
D.
基酸模式及蛋白质利用
E.
蛋白质含量机体消化吸收及利用的程度
【单选题】I don’t know .
A.
what the population of Tianjin is
B.
what is the population of Tianjin
C.
how much the population in Tianjin is
D.
how much is the population in Tianjin
【单选题】—____ is the population of the town? —Over 20,000 .And a third of the population ____ workers of the car factory. [ ]
A.
What; are
B.
How many; are
C.
What; is
D.
How many; is
【单选题】How does the population survey get it wrong in 2000?
A.
The population total in 2000 was reached by different method from that in 1990.
B.
There might be some problems with the judgment calls by the researchers.
C.
United Jewish Communities offered not enough financial support to the survey.
D.
It is the result of the rash of headlines leaving the impression that the population has declined.
【单选题】By the end of this century, the population of the world ______ , and so may the population of the small country.
A.
will be doubled
B.
may be double
C.
will have to be doubled
D.
may have been doubled
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