问题
填空题
单模光纤（1550nm、1310nm）波长的每根光纤的最大接头损耗双向平均，应小于等于0.08db／个，中继段内光缆接头平均损耗，应小于等于（）／个。
答案
参考答案：0.04db
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单模光纤（1550nm、1310nm）波长的每根光纤的最大接头损耗双向平均，应小于等于0.08db／个，中继段内光缆接头平均损耗，应小于等于（）／个。
参考答案：0.04db
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| 1. There is an eletric (电动的) _______ in the kitchen. 2. It’s good to _______ deeply when you feel nervous. 3. My bike is broken and I’m going to ask Grandpa Wang to _______ it. 4. Some kinds of _______ are caused by things people do - for example, smoking. 5. Why do people get a _______ when touching electric points with wet hands? 6. When she fell down, h  er head was _______ h ard on the floor. |