问题
问答题 简答题
用经验法怎样简易判别油质的优劣？
答案
参考答案：
用经验法直观，可简易判别油质的优劣程度，主要根据：①油的颜色、新油、良好油为淡黄色，劣质油为深棕色；②油的透明度，优质油为透明的，劣质油浑浊、含机械杂质，游离炭等；③油的气味区别：新油、优质的无气味或略有火油味，劣质油带有焦味（过热）、酸味、乙炔味（电弧作用过）等其它异味。
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用经验法怎样简易判别油质的优劣？
参考答案：
用经验法直观，可简易判别油质的优劣程度，主要根据：①油的颜色、新油、良好油为淡黄色，劣质油为深棕色；②油的透明度，优质油为透明的，劣质油浑浊、含机械杂质，游离炭等；③油的气味区别：新油、优质的无气味或略有火油味，劣质油带有焦味（过热）、酸味、乙炔味（电弧作用过）等其它异味。
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| Peter 1 very early in the morning. He 2 and goes out to in the open air. Then he has breakfast. Every day he goes to school 3 . 4 four classes in the morning. After class, he 5 some books. 6 is at twelve. After lunch he 7 a short rest. In the afternoon he has two classes. Then he has half an hour 8 sports (运动). He plays pingpong 9 football. In the evening he does his 10 at home. He goes to bed at ten thirty. | ||||
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