牙关紧闭的呼吸停止者，应行何种方式人工呼吸。（）
A.口对口
B.口对鼻
C.口对口鼻
D.鼻对口
E.与病人呼吸同步
参考答案：B
I asked him whether he had done all the work himself ________ whether he had had any assistance.
A．and
B．but
C．nor
D．or
AXE10中，那条命令可以知道CP的负荷。（）
A.DPWSP
B.PTWSP
C.PLLDP
D.DPPAI
