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【简答题】
三角形联结的三相对称感性负载由50Hz，220V的三相对称交流电源供电，已知电源供出的有功功率为3kW，负载线电流为10A，假设各相负载的等效阻抗为串联形式，则等效感抗【图片】= mH。（结果保留两位小数）
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举一反三
【简答题】luggage claim tag
【简答题】Czerwinski found that no other change to a computer system could more significantly improve a user's productivity than ________ .
【单选题】The bhavior sensor and software system bilt in a phone
A.
could help store messages.
B.
could send messages instantly,
C.
could tell when it is wise to interrupt you.
D.
could identify important phone calls.
【单选题】If only the rich could be helped by lawyers, the justice system would be ______
A.
undemocratic
B.
fair and reasonable
C.
modern
D.
in need of no changes
【单选题】If only the rich could be helped by lawyers, the justice system would be ______.
A.
undemocratic
B.
fair and reasonable
C.
modem
D.
in need of no changes
【单选题】If only the rich could be helped by lawyers， the justice system would be__________. 查看材料
A.
undemocratic
B.
fair and reasonable
C.
modern
D.
in need of no changes
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