单项选择题
A.bh<1.550m,hh<2.375m B.bh<1.815m,hh<2.45m C.bh<1.750m,hh<2.450m D.bh<1.750m,hh<2.375m
A.β==11.9<μ1μ2[β]=24 B.β==11.9<μ1μ2[β]=20.4 C.β==14.3<μ1μ2[β]=20.4 D.β==12.8<μ1μ2[β]=20.4