单项选择题 听力原文：W: What about the lecture given in the auditorium this afternoon?M: To tell the troth I would rather have spent nay time on the research report.Q: What does the men mean?(13)A．He liked the lecture very much.B．He regretted going to the lecture.C．He thought he should finish his research report first.D．He thought he had spent too much time on the research report.

多项选择题 自动调节进行比较的量值有（）。

单项选择题 关于有线电视系统部件安装符合下列要求的说法中错误的是（）。