Please arrange an interview with the manager tomorrow , or      it is convenient to him .

A．whenever

B．however

C．whichever

D．wherever

气胸发生率最高()
最易误伤动脉()
最安全()
最易发生感染()

A．锁骨下静脉锁骨下入路

B．锁骨下静脉锁骨上入路

C．颈内静脉前路入路

D．颈外静脉入路

E．股部入路