在市政消火栓保护半径以内,当室外消防用水量小于等于()时,可不设置室外消火栓。
A.10L/s
B.15L/s
C.20L/s
D.25L/s
参考答案:B
Before the train left, we __ the station.[ ]
A. got
B. arrived at
C. arrive in
D. got to
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