单项选择题

下图是一个异步电路，这个说法是否正确？
A、正确
B、错误

你可能感兴趣的试题

单项选择题

A__________is a person who has served and is no longer serving in the armed forces.
A、pensioner
B、senior
C、war veteran
D、war widow

单项选择题

In the experiment of analysis of nickel plating solution, which method is used to separate and remove the interference of nickel ion on boric acid determination?
A、Filtration method
B、Precipitation method
C、Extraction method
D、Ion exchange separation method