单项选择题
(A)300℃ (B)400℃ (C)500℃ (D)700℃
(A)中队 (B)管区 (C)火场 (D)消防车
(A)10min (B)15min (C)20min (D)30min
(A)1min (B)2min (C)3min (D)4min
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