答案是100w
答案是100w
1000w,1000w,500w,200w,100w,200w的六个用电器若同时使用,总功率是?干线电流是?
500w逆变器,最大功率是500w打开之后如果我只用100w这样耗电量是500w还是100w
两盏相同的220V 100W的白炽灯并联后接在220V的电路中,两灯的功率为.我知道答案是200W···请告诉我过
我老是求出的答案是B^2*w^2*r^4/2R 可答案说是B^2*w^2*r^4/4R
有表达式(w)?(-x):(++y),则其中与w等价是表达式是:A w==1 B w==0 C =1 D =0 ,答案给
I ______there for three days with my parents last month 答案是w
While she ________ TV in the sitting room,the bell_____.答案是w
this is the same bike___ i lost.(which,that) 答案是选that,为什么呢,w
I learned a lot when ________(work ) in the countryside.答案是w
同样是30W的节能灯和日光灯,哪个更省电求答案
The manager came up to see 答案为什么是(what the matter was) 而不是(w