骨折固定后1~2周内功能锻炼的方法
A.骨折部以上关节活动B.伤肢肌肉进行舒缩活动C.骨折部以下关节活动D.全身各部肌肉及关节活动E.重点关节为主的全面功能锻炼
参考答案:B
阅读短文,选择正确答案。
My father has a good friend in his factory. He's an old man. All of the children like him. We call him Uncle
Mike. He is from Canada. He lives in Beijing. He can't speak Chinese. We teach him Chinese. He teaches us
English. He doesn't work on Sundays. Look! He's mending (修理) a kite at home. He likes watching TV with hisson and daughter in the evening.
1. Uncle Mike and my father work in the same .[ ]
A. farm
B. school
C. factory
2. Uncle Mike comes from .[ ]
A. Canada
B. China
C. England
3. We teach Uncle Mike .[ ]
A. English
B. Japanese (日语)
C. Chinese
4. Uncle Mike likes . [ ]
A. mending a kite
B. watching TV
C. drawing
5. Uncle Mike's good friend.[ ]
A. I am
B. My father is
C. My mother is
组合开关常见故障及检修内容有()。
A、由于组合开关固定螺丝松动,操作频繁引起导线触点松动,造成外部连接点放电打火,烧损或断路;
B、开关内部转轴上扭簧松弱或断裂,使开关动触片无法转动;
C、开关内部的动、静触片接触不良,或开关额定电流小于负荷电流,造成内部触点起弧烧坏开关;
D、必须断电检修,以保证安全。