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【单选题】
吸收信号能量,防止信号反射的是()A.
网关
B.
收发器
C.
中央节点
D.
终端电阻
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反馈参考答案：
举一反三
【单选题】What the historians do in 'Unsolved History' is like detective's work, so their theories are not very scientific.
A.
Y
B.
N
C.
NG
【单选题】What do we learn from the text about the themes of historians and sociologists?
A.
They both stressed the contributions made by immigrants.
B.
Historians were more interested in the immigrant culture.
C.
Sociologists convinced people that new immigrants were different from earlier ones.
D.
Historians and sociologists disagreed on the way immigrants adapted to America.
【简答题】C语言表达式19/5%7+6.6/3*2的值为
【简答题】表达式19/5%7+6.6/3*2的值为_________________。
【单选题】Why do American families become smaller?
A.
Big families tend to cause the parents to get divorced.
B.
More children mean more cost of their education.
C.
They have to carry out family planning program.
D.
Children are likely to be spoiled in big families.
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