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【单选题】
关于光纤通信,下列说法正确的是( )A.
所谓光纤通信，就是利用光纤来传输光信息，光的波长没有要求。
B.
所谓光纤通信，就是利用光来传输信息，传输前后不用编码。
C.
所谓光纤通信，就是利用光纤来传输携带信息的光波以达到通信的目的。数字光纤通信系统由光发射机、光纤和光接收机组成。
D.
以上都不对
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反馈参考答案：
举一反三
【判断题】If you are not in the position to make decisions on the phone, transfer calls to the superiors in a company, such as the manager and the boss.()
A.
正确
B.
错误
【单选题】A conference is going on in your employer's office. The secretary to one of the people in the meeting calls and says she has a very important message for her boss and must talk with him.
A.
Enter the office and tell the person involved.
B.
Ask the secretary to wait, and give the person a note.
C.
Switch the call immediately to your employer's office.
【简答题】yze the following case with the 7 ethical rules: You boss calls you into her office and praises you for doing excellent work on a recent project. She suggests that this level of performance is lik...
【判断题】If you are not in the position to make decisions on the phone, transfer the calls to the superiors in a company, such as the manager and the boss.
A.
正确
B.
错误
【简答题】抄制平面图形，比例1：1，不标注尺寸。
【判断题】If you are not in the position to make decisions on the phone, transfer calls to the superiors in a company, such as the manager and the boss.
A.
正确
B.
错误
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