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【判断题】
根据求解类型的不同,科技问题可分为定性与定量两大类。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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【单选题】关于CSMA/CD技术的说法,错误的是
A.
CSMA/CD是以太网采用的介质访问控制方法
B.
全称是载波监听多路访问/冲突检测
C.
使用CSMA/CD技术，用户轮流占用信道
D.
其工作原理可以归纳为“先听后发”和“边发边听”
【简答题】— Can I help you? — Well, I’d like to buy a ______ handbag. A. black small shiny silk C. small shiny black sild C. shiny black small sild D. silk black shiny small
【简答题】试分析CSMA/CD介质访问控制技术的工作原理。
【简答题】试述CSMA／CD介质访问控制技术的工作原理。
【单选题】听力原文：W: Good afternoon, sir. What can I do to help? M: Oh, I have a terrible cold. Apart from that, I have a headache. Can you suggest something I can take to relieve the pain? W: Don't you have a pre...
A.
Boric acid.
B.
Lozenges.
C.
Cough syrup.
D.
Penicillin.
【单选题】听力原文：Could you send me a copy of the final contract? (A) I signed a contract for my apartment this morning. (B) I made lots of coffee for the meeting. (C) Sure. I' II mail you a revised one today. (29...
A.
B.
【单选题】The underlined word 'tips' in paragraph I means ______.
A.
small stun of money
B.
small but useful advice
C.
special piece of information
D.
small piece fitted to the end
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