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【简答题】
设系统对互斥资源R共有m个,n个进程共享(n>m),用P.V操作实现其互斥,则信号量S的变化范围为______。
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反馈参考答案：
举一反三
【单选题】I really feel like ______a talk with Daniel about her lessons but don’t know how to pick it up.
A.
to have
B.
having had
C.
to having
D.
Having
【单选题】—How was your holiday? —______. [ ]
A.
Not good at all
B.
Not bad
C.
I don't want to talk about it
D.
Don't mention it
【简答题】When we talk about how agers are getting worse and worse now, most young people don’t agree. agers always say they are growing up. They can have part-time jobs. And they can even drive a car. ...
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