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【单选题】
关于蜡疗所用石蜡的描述，错误的是A.
系石油的副产品
B.
系高分子碳氢化合物
C.
热容量大
D.
导热系数大
E.
熔点50～55℃
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
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【简答题】Falls are the number one cause of death to old people at home. Most old people can live safely at home if they make a few changes. Falls are common as people are getting older. Up to half of home acci...
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