【单选题】将有效值为20V的交流电压加到阻值为200Ω的电阻器两端,则电阻器两端电压和流过电阻器的电流分别为( )
【单选题】回答题。 At the European Commission in Brussels, they have a joke about the work interpreters do--"Languages", they say, "have nothing to do with interpretation, it helps to know them."Anyonethinking of b...
B.
he refuses to follow his own energy cycle
C.
he is not sure when his energy is low
D.
he is at his peak in the afternoon or evening
【单选题】将有效值为220V的交流电压加到阻值为200Ω的电阻器两端,则电阻器两端电压和流过电阻器的电流分别为()
【判断题】4 )自耦变压器与双绕组变压器比较,在所用硅钢片和电磁线相等的条件下,自耦变压器所能传递的能量较少。
【单选题】Optimism had been growing ________ the weekend meeting of European Union leaders in Brussels would come up with a substantial plan for dealing with the debt crisis. [ ]
【单选题】将有效值为220V的交流电压加到电阻值为100Ω的电阻器两端,则电阻器两端电压和流过电阻器的电流是()。
【判断题】在家庭教育中,当家长意见不统一时,家长可以按照个人意愿施教。
【简答题】Brussels, train, to, 2:25 p.m. The train to Brussels__________.
【单选题】将220V的交流电压加到电阻值为22Ω的电阻器两端,则电阻器两端()。
A.
电压有效值为220V,流过的电流的有效值为10A
B.
电压的最大值为220V,流过的电流的最大值为10A
C.
电压的最大值为220V,流过的电流的有效值为10A
D.
电压的有效值为220V,流过的电流的最大值为10A
【单选题】将 220V 的交流电压加到电阻值为 22 Ω的电阻器两端,则电阻器两端( )
A.
电压有效值为 220V ,流过的电流的有效值为 10A
B.
电压的最大值为 220V ,流过的电流的最大值为 10A
C.
电压的最大值为 220V ,流过的电流的有效值为 10A
D.
电压有效值为 220V ,流过的电流的最大值为 10A