[填空题] 客运站的旅客站台长度应按（）米设置。

In regard to a hub and spoke Frame-Relay data network, what kind of physical network is it classified as?（） [" point-to-point"," broadcast multi-access"," nonbroadcast multipoint"," nonbroadcast multi-access"," broadcast point-to-multipoint"] 一般的说，光源有三种（）。 ["灯光、太阳光、月光","灯光、太阳光、有太阳时所特有的蓝空味的昼光（太阳漫射光 ）","灯光、太阳光、紫外光","灯光、蓝光、有太阳时所特有的蓝空昧的昼光"] 按储存能量的方式分，蓄能器有重力式、弹簧式和（）三种。 ["真空式","充气式","皮碗式","活塞式"] “四风”是什么？ 唐宋八大家 客运站的旅客站台长度应按（）米设置。