卧式车床二级保养中，如发现主轴箱摩擦片磨光，可（）。
A、更换新摩擦片
B、进行喷砂修复
C、进行电镀修复
D、进行喷涂修复
参考答案：B
—What do you think of “Where are we going ,dad”, Mum?
—Perfect! Though I have seen it once, I want to see it _____ time.
A．more one
B．the second
C．a second
D．the other
当发生火灾、爆炸或意外事故时，应按应急反应计划进行事故处理。
