챕터 15. 보수 및 유지 관리
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Question 1 of 3
1. Question
다음 중 조명기의 반사경을 청소하는 도구로 가장 적절하지 않은 것은?
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Question 2 of 3
2. Question
다음 중 렌즈를 청소하는 방법으로 옳은 것은?
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Question 3 of 3
3. Question
다음 중 램프를 교체하기 전까지의 총 사용시간인 점검 수명(service life) 으로 옳은 것은?
CorrectIncorrect