真空灭弧室中的波纹管是真空灭弧室不可缺少的元件，可用来实现动静触头的运动而又不破坏火弧室的密封状态。
参考答案：对
_______ my opinion, that job is for a girl of ten.
A．In; too much
B．In; much too
C．By; too many
D．By; many too
什么叫“两床三塔+混床”除盐系统？
