Page 34 - พลังงานและสิ่งแวดล้อม
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               ตอนที่ 2 จงตอบคําถามต่อไปนี้ให้ถูกต้อง

               1. พลังงานมีประโยชน์ต่อการดํารงชีวิตของมนุษย์ในด้านใด


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               2. จงบอกความหมายของคําว่าพลังงาน



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               3. พลังงานมีกี่รูปแบบ ได้แก่อะไรบ้าง



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               4. พลังงานภายในได้แก่อะไรบ้าง



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               5. ร่างกายมนุษย์ต้องการพลังงานอะไร



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