蝶鞍侧位片上可测量其前后径及深径，其平均值分别为：()
A.10.5 mm, 9.5 mm B.11.7 mm, 9.5 mm C.12.0 mm, 10.0 mm D.5.0 mm, 10.0 mm E.10.0 mm, 20.0 mm正确答案B
蝶鞍侧位片上可测量其前后径及深径，其平均值分别为：()
A.10.5 mm, 9.5 mm B.11.7 mm, 9.5 mm C.12.0 mm, 10.0 mm D.5.0 mm, 10.0 mm E.10.0 mm, 20.0 mm正确答案B
