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【判断题】
电路中引入负反馈后，其放大倍数要降低。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A．He is going for a part-time job. B．He is going for a meeting. C．He is going for meeting the woman's secretary. D．He is going for an interview.
【简答题】连词成句。 1. Friday, what, is, do, going, to, next, he ______________________________________? 2. have, are, going to, not, we, any, the day after tomorrow, classes ______________________________________....
【单选题】Where is the man going?
A.
He is going home.
B.
He is going school.
C.
He is going to his office.
【简答题】用佛哈德法测定Br-和I-时,不需要过滤除去银盐沉淀,这是因为[填空(1)]、[填空(2)]的溶解度比[填空(3)]的小,不会发生[填空(4)]反应。
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