消防车道边缘距离取水点不宜大于（）。
A.1.5m
B.2m
C.3m
D.3.5m
参考答案：B
解析：消防车道边缘距离取水点不宜大于2m。
—When did you ?
—I've here for half a day. [ ]
A. arrive; arrived
B. reach; come
C. reach; reached
D. arrive; been
自动闭塞有分隔点的闭塞分区电路，AG和BG的发码是如何要求的？
