骨折的治疗原则中,除复位、固定还有()
A.抗感染
B.功能锻炼
C.内外用药
D.物理治疗
E.止痛镇静
参考答案:B
整流滤波电路如图所示,已知U1=30V,R=2kΩ,稳压管的稳定电流。通过负载和稳压管的电流和通过二极管的平均电流分别是()。
A.5mA,2.5mA
B.8mA.8mA
C.6mA,2.5mA
D.6mA,4.5mA
I hope that my father will quit smoking because I want him to live my grandpa does.
A.as a long and healthy life as
B.so long and healthy a life as
C.such long and healthy a life as
D.as long and healthy a life as