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  7. : =250 ; Q=433 ; S=500 .

  8. , R L, I=2 A. U=100 B, =120 . R XL .
  9. : R=30 ; XL=40 .

  10. , , , =90 . I1=5 A, I2=4 A. R XL .
  11. : R=10 ; X=7,5 .

  1. : . /.., .., .., ... 5- ., . .: , 1989. -528.
  2. .. : . . , . 7- ., . . .: . ., 1978. 528.


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