常规根管治疗术的步骤为
A．根管冲洗、预备和充填
B．根管消毒和充填
C．根管预备和充填
D．根管预备、消毒和充填
E．根管冲洗、消毒和充填
参考答案：D
The line of computing jobs waiting to be run on a computer system might be a （）. The jobs are serviced in the order of their arrival，that is，the first in is the first out.
A．queue
B．stack
C．array
D．record
与公孙穴相通的奇经是（）
A.冲脉
B.带脉
C.阴维脉
D.阴跻脉
E.任脉
