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U = ___________; U 1 = __________; R 1 = __________; _____________= ________; = ________ ____________ ___=______ ____ __;
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U = ________; U 1 =________; R 1 =___________=_______; ___________= ______; = ________ ____________ ___=______ ____ __;
6. ( 200 ) : R =___________=_______;
7. : X L =____________________=_______;
8. : _______________________________________
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