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【单选题】
离散的、不连续的信号称为( )。A.
模拟信号
B.
数字信号
C.
低频信号
D.
高频信号
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反馈参考答案：
举一反三
【简答题】设有三道作业,它们的提交时间和运行时间如下表: 作业号 提交时刻(时) 运行时间(小时) 1 10.00 2 2 10.10 1 3 10.25 0.25 求:试给出下面两种调度算法下,作业的执行顺序、平均周转时间和平均带权周转时间。 (1)先来先服务FCFS调度算法 (2)短作业优先SJF调度算法
【简答题】阅读理解。 This is News on the Hour, ED Wilson reporting. The president and First Lady will visit Africa on a good will tour in May. They plan to visit eight African countries. Reports from China say the C...
【单选题】Lipstick, according to this passage, was first made in ______.
A.
Europe
B.
America
C.
asia
D.
Africa
【简答题】A．He has stolen the thrown away pills. B．He practiced medicine without a license in Africa. C．Thrown away pills can not he given away. D．He has not reported his doing to the court.
【单选题】在调度算法中，有二种调度算法是照顾短作业用户，其中（）调度算法中采用作业估计运行时间。
A.
FCFS调度算法
B.
短作业优先调度算法
C.
时间片轮转法
D.
多级反馈队列调度算法
E.
高响应比优先算法
F.
基于优先权的剥夺调度算法
【单选题】Lipstick, according to this passage, was first made in ______.
A.
Europe
B.
America
C.
Asia
D.
Africa
【单选题】This is news on the hour, Ed Wilson reporting. The President and First Lady will visit Africa on a goodwill tour in May. They plan to visit eight African countries. Reports from China say the Chinese ...
A.
will send a group of Chinese scientists to pay a visit to the U.S. and Western Europe
B.
will send some scientists to visit U.S. and the Western Europe
C.
has expressed its strong wishes
D.
has given many reports to improve the ties
【单选题】This is News on the Hour, Ed Wilson reporting. The President and First Lady will visit Africa on a goodwill tour in May. They plan to visit eight African countries. Reports from China say the Chinese ...
A.
The President and First Lady.
B.
Ed Wilson.
C.
Scientists in California.
D.
Jan Singer.
【判断题】常用的作业调度算法有:先来先服务算法(FCFS)、短作业优先算法(SJF)、最短剩余时间优先算法(SRT)、最高响应比优先算法、基于优先数调度算法(HPF),以及时间片轮转调度算法。
A.
正确
B.
错误
【单选题】This is news on the hour, Ed Wilson reporting. The President and First Lady will visit Africa on a goodwill tour in May. They plan to visit eight African countries. Reports from China say the Chinese ...
A.
will send a group of Chinese scientists to pay a visit to the U.S. and Western Europe.
B.
will send some scientists to visit U.S. and the Western Europe
C.
has expressed its strong wishes
D.
has given many reports to improve the ties
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