18. 使1公克的水溫度升高1°C,需電能多少焦耳?
(A)1焦耳
(B)0.24焦耳
(C)4.2焦耳
(D)3.6×106焦耳
答案:登入後查看
統計: A(91), B(136), C(340), D(56), E(0) #2084797
統計: A(91), B(136), C(340), D(56), E(0) #2084797