两中继站间的通信距离越大，则电波传播的自由空间损耗（）。
A.越小；
B.不变；
C.越大
参考答案：C
Betty is going to London. But I don’t know ________.
A．when she sets off
B．when does she set off
C．when she will set off
D．when will she set off
简述软组织损伤康复治疗的目的。
