【单选题】【消耗次数：1】
热原的基本性质不包括（）
①
渗透性
②
被活性炭等的吸附性
③
水溶性
④
不挥发性
⑤
滤过性
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【多选题】
中药中挥发性成分的性质，以下说法正确的有
①
挥发油为以流动的油状液体，具香味
②
挥发油可随水蒸气蒸馏
③
挥发油具香味和挥发性
④
挥发性成分具还原性，易被氧化
⑤
按化学结构分类可分为萜类、脂肪族及芳香族挥发性成分
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