光缆的光束是在（）内传输
A、玻璃纤维
B、透明橡胶
C、同轴电缆
D、网卡
参考答案：A
Players on the China women's volleyball team hugged and burst into tears _____ they defeated
Germany at the 2011 world Cup.
A. in the second
B. the second
C. a second
D. the seconds
非冻胀地区基础埋深的最小深度为（）。
A.0.3m
B.0.5m
C.0.6m
D.0.8m
