广义社会福利通常是将社会福利当作_____________的同义词。
参考答案：社会保障
额定电压在110kV及以下，额定电流较小的隔离开关多采用__________控制。
As nobody here knows what is wrong with the machine, we must send for an engineer to______the
problem. [ ]
A. handle
B. raise
C. face
D. present
