以下（）为开关稳压电路中的组成部分。
A.开关调整管
B.储能电路
C.取样电路
D.脉冲电路
E.基准电压电路
参考答案：A, B, C, D, E
I can still vividly remember to pick our steps in the mountain down the deep valley on my 21st birthday.
A．picking ... in the mountains
B．picking ... on the mountain
C．having picked ... from the mountains
D．picking ... from the mountains
正常交易定价原则
