|
|
: |
- |
-815 |
33÷37 % |
-815 -813 |
27÷32 % 28÷33 % |
.3: - (150±2)0 -815 -813 |
1 2 3 |
1) 20÷28 /2 -813 |
50÷70 /2 (19,2÷14,0 2/) |
2) -813 |
15÷20 |
: |
2 |
|
-20 |
0 |
+20 |
, |
120 |
90 |
60 |