用兆欧表测量吸收比是测量()时绝缘电阻之比,当温度在10—30℃时吸收比为1.3—2.0时合格。

用兆欧表测量吸收比是测量()时绝缘电阻之比,当温度在10—30℃时吸收比为1.3—2.0时合格。 A.15S和60S B.15S和45S C.20S和70

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关于电力变压器的励磁电抗,下述说法中错误的是

关于电力变压器的励磁电抗,下述说法中错误的是 A.不管电力变压器的类型和绕组接线方式如何,其正序励磁电抗和负序励磁电抗都可以视为无限大; B.不管电力变压器

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6. His main ________ in life is to earn as much as

6. His main ________ in life is to earn as much as money as possible. A) reason

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12. It’s one of many excellent _______ organizatio

12. It’s one of many excellent _______ organizations that work with the poor in

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