如伤员无呼吸,颈动脉无搏动,应立即进行()
A、人工呼吸
B、心脏挤压
C、心肺复苏
D、止血包扎
参考答案:C
I really appreciate some time to surf the Internet. But I am too busy.
A.to have
B.to having
C.have
D.having
在特别潮湿或周围均属金属导体的地方工作时,行灯的电压应不超过()V。
A.12;
B.24;
C.36;
D.48;