题型:单项选择题 如图是小明同学用伏安法测定灯泡电阻的电路图,当他闭合开关S时,发现灯不亮,电压表的示数为零。故障可能出现在灯或电阻上。若电流表示数不为零,故障的原因可能是 ;若电流表示数为零,故障的原因可能是 。 查看答案
题型:单项选择题 It was in the factory ________ his friend worked ________ he picked up a lot of experience. [ ]A. where; where B. that; where C. that; that D. where; that 查看答案