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【单选题】
下列不属于沥青混合料按其矿料级配组成特点的是()A.
悬浮-密室结构
B.
骨架-空隙结构
C.
密室-骨架结构
D.
悬浮-骨架结构
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举一反三
【单选题】Which of the following is TRUE according to the passage?
A.
People are usually willing to give evidence.
B.
Policemen feel that the image of their lives shown on TV is not accurate.
C.
Policemen and detectives spend little time at the typewriter.
D.
Generally the detective's work is over once the arrest has been made.
【简答题】已知圆O： ，由直线 上一点P作圆O的两条切线，切点为A，B，若在直线 上至少存在一点P，使 ，则k的取值范围是 .
【简答题】已知点 是直线 上一动点，PA、PB是圆 的两条切线， A、B是切点，若四边形PACB的最小面积是2，则k的值为
【简答题】He became inspired when he thought about fighting against cholera ordinary people . A, that, exposed to B, to which, exposed C, that, are exposed D, which, are exposed to
【单选题】Jack London became rich and famous
A.
when he was tobly
B.
when he was over twenty
C.
in his thirties
【单选题】When did Chekhov begin to publish stories?
A.
After he graduated.
B.
When he became a university student.
C.
In the 1940s.
D.
In 1892.
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