鼻咽癌常规X线检查位置为（）
A.鼻咽侧位
B.颅底位
C.颈侧位
D.汤氏位
E.鼻咽侧位+颏顶位
参考答案：E
每列客车配置_____个干粉灭火器
A、2
B、13
C、14
D、16
（）the project in time, the staff were working at weekends.
A. Competing
B. Having completed
C. To have completed
D. To complete
