-
27 18 1/3 6 2 12 ()A 26 B 24 C 22 D 20
-
18 1/3 6 2 12 ()A 26 B 24 C 22 D 20
-
-1,10,6,19,17,()A.18 B.24 C.28 D.32
-
1,2,3,6,12,24,() A.48 B.45 C.36 D.32
-
1 3 6 12 ( )。A.20B.24C.18D.32
-
1 3 4 8 16 ()A.20B.24C.28D.32
-
正常小儿前卤闭合的时间最迟为( )。A.12个月B.24个月C.18个月D.3~4个月E.5~6个月