题目

如图所示,是同学们在实验课上连接的一些电路,闭合开关后,出现电源短路的是(     ) 答案:C解:A、当闭合开关后,灯泡可以发光,不符合题意; B、电键闭合后,两盏灯泡可以发光,不符合题意; C、当闭合开关后,电源被短路,符合题意; D、当闭合开关后,一个灯泡被短路,另外一只灯泡可以发光,不符合题意; 故选C.Fill in the blanks according to the Phonetics (按所给音标填空)1.I hope that I can go and study at one of the world's best _______________. [?ju?n??v??s?tiz]2.We can change electricity into moving _______________. [?en?d?i]3.The results were better than _______________. [?k?spekt?d]
物理 试题推荐