bouqinstecdr sometlidrfg
A.4
B.5
C.6
D.7
:1,2,2,3,4,()。A.4 B.5 C.6 D.7
bouqinstecdr sometlidrfg A.4 B.5 C.6 D.7
5,7,4,6,4,6,()A.4 B.5 C.6 D.7
正常精液pH为A.4.0~5.0B.5.0~6.2C.6.2~7.2D.7.2~7.8E.7.8~8.0
颈部气管共有软骨环A、4~5个B、5~6个C、6~7个D、7~8个E、8~9个
WOENGSIAD IARENTDYKSA.4 B.5 C.6 D.7