: ✔ 3 ✔ 2 ( ) ✔ 2 ✔ 90 :
1. 3 2. 3. , (250 ) , , 4. 5. , , , ( ) 6. , 10-15 7. 10-15 8. 10-15 9. - - 10. - - 11. 2 12. ,