20.有条件的中间站，车站电台应由那里供电？
["\u7b54\uff1a\u6709\u6761\u4ef6\u7684\u4e2d\u95f4\u7ad9\uff0c\u8f66\u7ad9\u7535\u53f0\u5e94\u7531\u4e2d\u95f4\u7ad9\u9ad8\u9891\u5f00\u5173\u7535\u6e90\u67dc\u4f9b\u7535\u3002"]
20.有条件的中间站，车站电台应由那里供电？
["\u7b54\uff1a\u6709\u6761\u4ef6\u7684\u4e2d\u95f4\u7ad9\uff0c\u8f66\u7ad9\u7535\u53f0\u5e94\u7531\u4e2d\u95f4\u7ad9\u9ad8\u9891\u5f00\u5173\u7535\u6e90\u67dc\u4f9b\u7535\u3002"]