绕线型异步电动机采用附加电阻启动时，每切除一段电阻都会使（）突然增大。
A.转矩
B.电压
C.电流
D.电磁转矩
参考答案：D
Mo Yan, many of works were based on his experience in his birth place, was awarded the Nobel Prize in Literature 2012.
A．who
B．whom
C．whose
D．his
闸阀一般适用于小口径的管路。
