单项选择题
A.0.55 B.0.78 C.0.86 D.0.93
A.0.93 B.0.78 C.0.69 D.0.55
A.93%；93% B.78%；78% C.78%；93% D.55%；55%
A.0.12L/kg B.0.22L/kg C.0.32L/kg D.0.42L/kg
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