题目

Does the way you thought of _______ the water clean make any sense? A. making      B. to make C. how to make      D. having made 答案：B当电阻两端的电压由8V变为10V时，通过电阻的电流增加了0.1A，该电阻的阻值为　　Ω；若它两端电压变为0V，则该电阻中电流为　　A，此时电阻为　　Ω．