220kV母联开关上应配置专用的（）保护，在微机母差保护中配置的（）统一停用。
参考答案：充电解列；母联充电保护和过流保护
--- The drought situation has been severe these days．
--- If it had rained even a drop, things would be much better now and many crops ____．
A．wouldn't die
B．would die
C．wouldn't have died
D．would have died
归纳法的具体表现形式有哪些（）
A.典型归纳法
B.简单枚举归纳法
C.科学归纳法
D.统计概括归纳法
