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问题 判断题

带电局部放电检测中缺陷的判定应排除干扰，综合考虑信号的幅值、大小、波形等因素，确定是否具备局部放电特征.

答案

参考答案：对

填空题
选用方框中的词组完成句子。
instead of, build up, have fun, follow the rules  right away, more and more, take part in
1. _______ young people like playing computer games.
2. As a student, you must _______ of your school.
3. Walking helps to _______ our leg muscles.
4. Will you _______ our English corner?
5. —Lucy, don't listen to the music. Do your homework first.
    —OK. I'll do it _______.
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选择题

My mother is ______ English teacher in _____ middle school.

A．a, an

B．an, an

C．an, a

D．a, a
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