外阴、 * * 创伤的处理原则()
A.消肿、止血、导尿
B.保持外阴部的清洁
C.止痛、止血、抗休克和抗感染
D.观察生命体征
E.做好家属工作
参考答案:C
______from space, the earth, with water _____seventy percent of its surface looks like a blue ball.
A.Seen; covered
B.Seen; covering
C.Seeing; covered
D.Seeing; covering
为什么规定要连续不断的取出相当于1%氧产量的液氧?