单项选择题
A.宽带直放站B.选频直放站C.光纤直放站D.无线直放站
A.35mm*3mm,90mm2B.40mm*4mm,95mm2C.30mm*3mm,85mm2D.45mm*4mm,90mm2
A.500mmB.800mmC.1200mmD.1500mm