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。
根据句意及首字母提示完成单词。
1. The pay phone is b______ the post office and the supermarket.
2. The library is a______ from the bank.
3. Is there a supermarket in the n______?
4. Please t______ left and you can find the school over there.
5. I want to eat something, is there a r______ near here?
《四川省安全生产条例》规定,从事有可能被转动机械绞辗伤害的作业,不得()。
A.穿裙装
B.戴手套
C.戴护目镜
D.戴围巾
E.留长发
F.悬露佩饰物