单项选择题
A.0.5-0.8L/minB.1.0-1.3L/minC.1.2-1.5L/minD.1.3-1.6L/min
A.1:5-8B.1:8-14C.1:15-20D.1:21-25
A.1:5-10B.1:10-15C.1:15-20D.1:20-25
A.0.1-0.3L/minB.0.3-0.5L/minC.0.5-0.8L/minD.0.8-1.0L/min
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