医嘱的内容不包括
A.护理常规
B.护理诊断
C.隔离种类
D.护理级别
E.术前准备
参考答案:B
The human body is composed of organs, each ____ a definite job to do. [ ]
A. have
B. to have
C. has
D. having
在7,7-二氯双环[4.1.0]庚烷的制备实验中,四乙基溴化铵的作用是什么?它的多少对操作有何影响?