A.4:5
B.2:3
C.1:1
D.5:6
[单选题]A.4:5B.2:3C.1:1D.5:6
[单选题]A.4:5B.2:3C.1:1D.5:6
[单选题]A.卵巢畸胎瘤B.节育器子宫肌层嵌顿C.盆腔肠管回声D.节育器异位
[单选题]A.0B.-5C.-6D.-11
[单选题]A.200molB.20molC.25molD.100mol
[单选题]A.9143吨B.9052吨C.8875吨D.8599吨
[单选题]A.50m/sB.55m/sC.60m/sD.65m/s