第23题: [单项选择]电波传播方向可根据()定则确定。 A. 右手螺旋 B. 左手螺旋 C. 安培环路定理 D. 楞次定律 参考答案:A
第24题: [单项选择]What is the man going to do A. Send a letter. B. Write a letter. C. Change some money. 参考答案:C 答案解析:[听力原文] M: I have finished the letter. Would you please help me to send it I need to go to the ba