TR = = 45/ 0 = 35 ()

R = ( T0)/N TR= (90 35)/1 45 = 10 /.

3 ( ) 40 2 ( ). ( 1 : 2) , , 10%, . . 44 2.

. 138 , 28 , 3X46 2=138 2, 50% . , , .

. 139. , (, 70 ).