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【单选题】
一对外啮合的标准直齿圆柱齿轮,模数m=4mm,中心距a=160mm,则两齿轮的齿数和为A.
60.0
B.
80.0
C.
100.0
D.
120.0
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【单选题】Compared with other fuel sources, both non-renewable and renewable, which of the following is not mentioned as a primary advantage of coal ?
A.
abundance
B.
even distribution
C.
affordability
D.
low capital expense
【简答题】Our company is going to set up a _______ in Toronto, Canada.
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A.
one hundred
B.
one thousand
C.
two hundred
D.
two thousands
【简答题】根据短文内容，选择最佳答案。 Hello, everyone(每个人)! My name is Bob. I live in Toronto, Canada. It’s a very beautiful city. My parents are from France. They speak French. And I can speak English and French. I am 13 y...
【单选题】Professor Barry Wellman of the University of Toronto in Canada has invented a term to describe the way many north Americans interact these days. The term is ' networked individualism'. This concept is...
A.
The United States
B.
Canada
C.
The U. S. and Canada
D.
Europe
【简答题】阅读理解。 Hello, everyone ! My name is Bob. I live in Toronto, Canada. It's a very beautiful city. My parents are from France. They speak French. And I can speak English and French. I am 13 years old and ...
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