第1题: [单项选择]A. Someone from the maintenance office will fix the faucet. B. Tom will phone the maintenance office for you. C. I will get up early and have the faucet repaired for you. D. I will ask Tom to repair the faucet in the washroom. 参考答案:D 答案解析:[解析] You needn’t notify the maintenance office about the fixing of the faucet in the washroom. I
第31题: [单项选择]A transformer in an electric circuit serves to () A. generate its own electrical power B. transform electrical energy into mechanical energy C. increase or decrease circuit voltage as required D. convert AC current to DC current 参考答案:C