医学伦理学中最古老、最有生命力的医德范畴是（）。
A．医疗保密
B．医疗公正
C．医疗权利
D．医疗荣誉
E．医疗义务
参考答案：E
You must leave your bag _____because I have found every place in the room. [ ]
A. somewhere else
B. somewhere
C. somewhere other
D. anywhere
采用半波整流方式进行直流耐压试验时，通常应将整流硅堆的负极接至试品高压端。
