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【判断题】
黄河发源于青海咯拉山,自西向东分别流经青海、四川、甘肃、宁夏、内蒙古、陕西、山西、河南及山东,最后流入黄海。
A.
正确
B.
错误
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【简答题】小题1:Many athletes won gold medals in the Olympics, they are our national h__________. 小题2:Tom didn’t finish _____________( write) his test because he ran out of the time. 小题3:The girl is a mode...
【单选题】P、V 操作是对 ( ) 的操作。
A.
临界区
B.
进程
C.
缓冲区
D.
信号量
【单选题】P 、 V 操作是 。
A.
两条低级通信原语
B.
两组不同的机器指令
C.
两个函数
D.
两条高级通信原语
【单选题】P 、 V 操作是 。
A.
两条低级进程通信原语
B.
两条高级进程通信原语
C.
两条系统调用命令
D.
两条特权指令
【判断题】加热功能的基础上,增加了播放音乐的功能,说明这个企业注重产品的核心效用。
A.
正确
B.
错误
【单选题】It is known to us that it was such great efforts _______ all the Chinese athletes had made _______ helped them get 51 gold medals in the 2008 Beijing Olympic Games. [     ]
A.
as, that
B.
that, which
C.
that, as
D.
which, which
【单选题】What accounts for black athletes' failure to obtain a college degree, according to the man?
A.
Coaches lack the incentive to graduate them.
B.
College degrees do not count much to them.
C.
They have little interest in academic work.
D.
Schools do not deem it a serious problem.
【单选题】Although there were only five athletes ____ in the race, it was a rather exciting one.
A.
competing
B.
having been competed
C.
to compete
D.
to be competed
【多选题】P、V操作是操作系统提供的具有特定功能的原语。利用P、V操作可以( )。
A.
保证系统不发生死锁
B.
实现资源的互斥使用
C.
推迟进程使用共享资源的时间
D.
提高资源利用率
E.
协调进程的执行速度
【单选题】P 、 V 操作是
A.
两条低级进程通信原语
B.
两组不同的机器指令
C.
两条系统调用命令
D.
两条高级进程通信原语
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