Page 10 - ใบความรู้ หน่วย 7 -1
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4. จงอธิบายขั้นตอนการปฏบัติงานเลื่อยให้ถูกต้อง
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5. จงบอกการแก้ไขข้อบกพร่อง ข้อควรระวง และการบำรุงรักษาเลื่อยมืออย่างน้อย 5 ข้อ
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