1. .
.1 23-05-95 (. ). .1 .
.2, , r r. r r, , (5) .
, . . 2 .
2. .
( 10, . ) , , (.2 ) . .3 . 407-2 ( ), .3 .
3. .
( ) 3 (. ) 220 . , .. 10. , 9, 10 . . 4 , =f() . , .
4. .
, , =1 40 . . .5 . .
5. .
=1,0 6 (. ) U. . 17 . . 6 =f(U). . U =220 10 %. .
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6. .
=60 . 18 . . ( 200-300 , ). , , . .7 , (6).
r=(E/E) 100%, (6)
() . , , .
, , , .