光纤配线箱
参考答案：
光纤配线箱特别适合于光纤接入网中的光纤终端点，具有光缆的配线和熔接功能，可以实现光缆纤芯的灵活调线及存储。
We were scared to death when the fire ____ . Fortunately, it was put out before it caused much
damage. [ ]
A. broke out
B. came out
C. gave out
D. turned out
工业储量减去设计损失为（）。
