题目内容
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[单选题]
在操作系统中，Wait（s)和Signal（s)操作是一种（)。
A.机器指令
B.作业控制命令
C.系统调用命令
D.低级进程通信原语
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.机器指令
B.作业控制命令
C.系统调用命令
D.低级进程通信原语
如果结果不匹配，请 联系老师 获取答案
更多“在操作系统中，Wait（s)和Signal（s)操作是一种（…”相关的问题
A.C/S结构即客户机/服务器体系结构
B.C/S结构是计算机网络的基础，B/S是一种特殊的C/S
C.C/S结构是浏览器/服务器结构
D.C/S结构采用HTTP通信
E.在C/S结构中，服务器是指一种特定的计算机程序
F.在C/S结构中，客户机程序和服务器程序必须是同一操作系统程序
【多选题】关于计算机网络、服务器和客户机，下列说法正确的是（ ）
A在计算机网络中，服务器和客户机采用C/S模式协同工作
B服务器是安装了服务程序的计算机，客户机是安装应用软件的计算机
C服务器就是指安装了服务器操作系统的计算机
D在服务器计算机上，可以安装桌面操作系统
E在客户机中，不能安装服务器操作系统
F计算机网络中，对服务器和客户机的划分是按照计算机性能来划分的
A．She thinks it's too late anyway.
B．She thinks he should wait a minute.
C．She thinks he should do things early.
D．She thinks there might still be a chance even if it is last minute.
M: According to the timetable, it's going to land at the airport at 7 and we have to wait here until then.
Q: How long will they have to wait？
(13)
A．Two hours.
B．Three hours.
C．Four hours.
D．Five hours.
A．The man should wait a minute.
B．It's too late for the man to register.
C．The man should have done things earlier.
D．There might still be a chance even if it is the last minute.
A．Get an expert to treat John's mother.
B．Send John's mother to hospital.
C．Advise John's mother to come into his hospital at once.
D．Advise John's mother to wait for a few weeks.
A．They should buy a lot of coffee.
B．There"s room to stack up the cans of coffee.
C．They should wait for a better deal on coffee.
D．The store they are talking about is out of coffee.
A．He had to wait for an appointment.
B．He had other things to do first.
C．His foot had seemed not serious.
D．His injury had kept him at home.
A．because he has to wait until he bas three children
B．because he has to make enough money for his wife's family
C．because it is a necessary ceremony at marriage
D．because it is a necessary type of gift to exchange at marriage
A．they can have it fixed in no time
B．it’s no longer necessary to make an appointment
C．the appointment takes only half a day to make
D．they only have to wait half an hour at most
听力原文：W: Here is my application form.
M: Would you please wait in a line to recall your number？
Q: What does the man ask the woman to do？
(18)
A．To wait for her turn.
B．To fill in an application form.
C．To make a phone call.
D．He shares the woman's opinion.
