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【判断题】
The author's family decided to move back to the convenient city life after going through too many difficulties in the countryside.A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】下述哪些属于集线器的缺点的是________。
A.
集线器不能延伸网络可操作的距离
B.
集线器不能过滤网络流量
C.
集线器不能在网络上发送变弱的信号
D.
集线器不能放大变弱的信号
【简答题】In the 1st version we learn that scientists were ______ the world about this____ years ago, but people did ______. In the 2nd version we learn that many ______have happened ______ ___ our grandparents...
【单选题】听力原文：W: In the film version of your life, Russell Crowe, who plays your part, sees people who really aren't there. Did aliens speak to you? M: When I began to hear voices I thought of the voices as fr...
A.
John Nash.
B.
Russell Crowe.
C.
Nash's friend.
D.
Crowe's doctor.
【单选题】电力工业中为了提高功率因数,常采用( )
A.
给感性负载并联补偿电容
B.
提高发电机输出有功功率，或降低发电机无功功率
C.
给感性负载串联补偿电容，减少电路电抗
D.
不确定
【单选题】电力工业中为了提高功率因数,常采用( )
A.
给感性负载串联补偿电容，减少电路电抗
B.
给感性负载并联补偿电容
C.
提高发电机输出有功功率，或降低发电机无功功率
D.
并上电阻
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