【多选题】三相异步电动机产生过载的原因主要有( )。
【判断题】Walt Whitman is called the "Bard of Democracy" and considered one of America's most influential poets.
【判断题】Democracy is one of the consequences of economic growth and progress.
【多选题】三相异步电动机产生过载的原因主要有( )。
【判断题】One of Dickens’ writing features is the spirit of democracy and humanism.
【单选题】Congress vs ParliamentThe difference between congress and parliament exist in the way they function. Congress and parliament are terms that have come to represent two major forms of democracies in dif...
A.
House of Lords and House of Commons
B.
Senate and House of Representatives
C.
House of Lords and House of Representatives
D.
Senate and House of Commons
【简答题】旋转机器产生不平衡振动的主要原因有哪些?
【单选题】异步电动机产生不正常振动和异常的声音,主要有()两方面的原因。