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【单选题】
局域网中常使用两类双绞线，其中STP和UTP分别代表A.
屏蔽双绞线和非屏蔽双绞线
B.
非屏蔽双绞线和屏蔽双绞线
C.
3类和5类屏蔽双绞线
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反馈参考答案：
举一反三
【判断题】听录音,简述守时的必要性(至少2个理由) Listen to the conversation twice and choose the best answer to each question. 1. The company has got some problems with______. A. all its products B. its services C. its customer...
A.
正确
B.
错误
【简答题】表达式SUBSTR("GotFocus",LEN("语言"))的返回值是____________。
【简答题】Change the verbs to the passive. Do not change the tense. 0. Bob mailed the package. The paskage ......................... by Bob. Answer: was mailed 1. That company employs many people. Many people ....
【单选题】The company has been producing this model of machine tool__2008.
A.
since
B.
after
C.
for
D.
before
【简答题】u06p12.mp3: 2. What is the advantage of Marine Service? A. The company has good fame. B. The company is efficient. C. The company has a lot of experience.
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