降压起动
参考答案：
为了减小鼠笼电动机的起动电流，在起动时降低加在电动机定子绕组上电压，电动机启动后再将电压升高到额定值。
“开始”按钮，通常位于桌面的( )。
A．底行左侧
B．底行右侧
C．左上侧
D．右上侧
It was lucky that little Jack was not at home when the fire broke out; otherwise, he____his life.
A．had lost
B．would lose
C．would have lost
D．might lose
