以下哪项不是癌痛药物治疗的基本原则()
A.按阶梯给药
B.按时给药
C.按需给药
D.个体化给药
E.无创给药
参考答案:C
根据句意和首字母提示补全单词。
1. Peter comes to visit his grandparents s_______.
2. Tigers are kind of d_______.
3. Let's go o_______ take a walk.
4. The bus s_______ is across from the hotel.
5. The reporter works for a n_______.
一般筛子的宽度与长度之比为1:3-1:4。