怀疑有下颌下腺导管结石,哪种X线片检查为首选()
A.下颌骨侧位片十下颌横断颌片
B.下颌下腺造影
C.下颌体腔片
D.下颌曲面断层片
E.下颌下腺侧位片十下颌横断颌片
参考答案:E
—What part of England do you live in ?
— place called Sally Oak . Do you know it?
A.不填;A
B.the ; A
C.a; The
D.不填;The
了解我国公路现状和发展规划