The goals were scored by Jaredi, at 28 and 45+1.
With this result, the two-time champions remain in second, with 31 points, and are one behind leader Desportivo da Lunda Sul.
Also this Sunday, in a delayed game of the 15th round, São Salvador do Zaire beat Académica do Lobito 2-0, with goals from Coxi, at 13, and MC, two minutes later.
Classification:
1. Desportivo da Lunda Sul, 32 points
2. Petro de Luanda, 31
3. Kabuscorp do Palanca, 27
4. Sagrada Esperança, 27
5. 1.º de Agosto, 20
6. Williete de Benguela, 17
7. Bravos do Maquis, 17
8. Desportivo da Huila, 16
9. São Salvador do Zaire, 14
10. Académica do Lobito, 13
11. Santa Rita de Cássia, 11
12. Clube Recreativo União de Malanje, 11
13. Interclube, 10
14. Recreativo do Libolo, 10
15. Sporting de Cabinda, 5