保护全部停用是指将保护的直流电源停用
参考答案：错
One solution to major security problems is ______, which are frequently installed to fix knownsecurity holes.
A．additions B．compensations C．patches D．complements
RA的关节畸形可表现为（）
A.掌指关节脱位
B.手指关节尺侧偏斜
C.手指关节屈曲畸形
D.手指关节天鹅颈样畸形
E.近端指间关节梭形肿大
