A.2% B.1% C.2.5% D.0.5% E.5%
A.(77.5/10.75)×100% B.(10.75/77.5)×100% C.(10.75/77.5)×100%(mmHg) D.(77.5/10.75)×100%(mmHg) E.以上都不對(duì)
A.8 B.9 C.7.6 D.8.3 E.無(wú)法計(jì)算