问题
问答题 简答题
光缆工程竣工测试中光纤特性测量包括哪些内容？
答案
参考答案：
⑴中继段光纤线路损耗测量；
⑵中继段光纤后向散射信号曲线检测；
⑶长途光缆链路偏振模色散测量。
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光缆工程竣工测试中光纤特性测量包括哪些内容？
参考答案：
⑴中继段光纤线路损耗测量；
⑵中继段光纤后向散射信号曲线检测；
⑶长途光缆链路偏振模色散测量。
| 综合填空。（用方框里的单词填空，每词只能用一次。) | |
language 2 some of customs of the country. In Japan, when you enter someone's home, you should 3 your shoes. In Brazil, people never go out with their hair 4 . In Indonesia, you mustn't point to 5 with your foot. Don't eat 6 your left hand in Muslim countries, and don't touch a child 7 the head in Thailand. When people meet each other for the first time in 8 , they say "How do you do?" and shake hands (握手). 9 they do not shake hands after they haven't met for a long time 10 when they will be away from each other for a long time. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. |