https://ecbt.kr/cert/craftsman-computer-graphic/concept/color-attribute-combination-effect 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-color-mode-usage 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-computer-graphic-basics 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-image-components 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-image-composite-correction 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-image-work-concepts 2026-11-04T11:08:52+00:00 weekly 0.7 https://ecbt.kr/cert/craftsman-computer-graphic/concept/two-d-input-output-basics 2026-11-04T11:08:52+00:00 weekly 0.7