229. ____________ .
230. 30 . . () :
0, 25, 20, 15, 20, 25, 35
, . . , : 0, 25, 20, 15, 20, 25, 35.
231.
232. ()
233. ______ .
234.
,
235. . _________ .
236. , ,
237.
238. 30 . . () :
, ____ . .
239. :
() ____ . .
240. 30 . ., 25 . ., 15 . ., 10 . ., 5 . .
5 . .
241. , , , , ,
242.
243.
244. 30 . . () :
|
|
30, 55, 75, 90, 110, 135, 170
0, 30, 60, 90, 120, 150, 180
0, 25, 45, 60, 80, 105, 140
0, 25, 22,5, 20, 20, 21, 23,3
245. _____________ .
246. 20%, 5%,
26%
247. -:
____ . . .
248. , 20 50 . . 5 14 . ., , ___________ _____.
; 1,2
ΔQ ,
Q0 ,
ΔI ,
I0 .
249. , ,