题目

用正确的书写格式抄写下列句子 (1) What doyou like?I like cakes. (2) Can youread? Yes, I can. 答案:What do you like?I like cakes. Can you read? Yes, I can.如图所示的电路中,电源电压不变,R1为定值电阻.闭合开关S.当滑片P从中点向右移时( )A.电流表A1的示数变小B.电流表A2的示数变小C.电压表的示数变大D.R2的电功率变大
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