单项选择题
A.72/47mmHgB.80/60mmHgC.92/61mmHgD.100/67mmHgE.110/74mmHg
A.4mlB.8mlC.10mlD.12mlE.14ml
A.1/5张B.2/3张C.1/3张~1/5张D.1/2张E.等张