A.γ0S1/S2=0.85>0.8;不满足漂浮验算
B.γ0S1/S2=0.75<0.8;满足漂浮验算
C.γ0S1/S2=0.70<0.8;满足漂浮验算
D.γ0S1/S2=0.65<0.8;满足漂浮验算