单项选择题
A.1/4B.1/3C.1/2D.2/3E.3/4
A.2-4L/minB.4-6L/minC.6-8L/minD.8-10L/minE.10-12L/min
A.烂苹果味B.氨臭味C.酸味D.大蒜味E.苦味