问答题 一个阻值为400W的电阻元件上消耗的功率为1W，则流过它的电流为（   ）mA。

单项选择题 Such images ____________ social and cultural constructions, and at the same time, may serve tointerpret the relationships of the human realm. A、nature B、natural C、naturalist D、naturalize

单项选择题

单项选择题 What will vocational education in China be like in the future?

单项选择题 舟水论最早是由魏征提出来的。