题型:选择题 — Do you enjoy your present job? — ______. I just do it for a living. [ ]A. Of course B. Not reallyC. Not likely D. Not a little 查看答案
题型:填空题 滑动变阻器是靠改变电阻线在电路中的______来改变电阻,从而改变电路中的电压和电流.一个滑动变阻上标为“1A.20Ω”的字样,其中“1A”表示______,“20Ω”表示______. 查看答案