III.Listen and choose proper answeror answers to the recorded sentence.听录音句子,选择恰当的回应。[音频]__________
A. What do you do?
B. How do you do?
C. I've done nothing.
D. I'm a student.
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III.Listen and choose proper answer or answersto the recorded sentence.听录音句子,选择恰当的回应。[音频]__________
A. No thank you.
B. Thank you for inviting.
C. You're welcome.
D. Oh, it's my pleasure.
III.Listen and choose proper answer oranswersto the recorded sentence.听录音句子,选择恰当的回应。[音频]Please choose the exact email address that you have heard.请选出你听到的邮箱地址。
A. 1130green.applegmail@com
B. 1113greenapple@gmail.com
C. 1114greenapple@gmail.com
D. 1140green@apple.gmailcom
1、随参考点的改变而改变的物理量是( )
A、电位
B、电压
C、电流
D、电位差
2、在阻感串联正弦交流电路中,当交流电源的电压大小不变而频率降低时,电感线圈两端的电压将( )。
A.增大
B.减小
C.不变