单项选择题
A.＜0.3B.＜0.35C.＜0.45D.＜0.5
A.瘦煤B.气煤C.肥煤D.焦煤
A.煤的可浮性差B.煤的可浮性好C.煤的亲水性强D.煤的疏水性弱
A.69.72%、83.85%、易浮B.69.72%、83.85%、极易浮C.69.73%、83.86%、易浮D.69.73%、83.86%、极易浮
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