A.(3.0±0.1)L/minB.(3.0±0.5)L/minC.(2.0±0.1)L/minD.(2.0±0.5)L/min
A.3.8±0.3B.4.0±0.3C.4.3±0.3
A.88~112B.90~114C.92~116D.94~118