【单选题】【消耗次数：1】
挥发油中的萜类化合物主要是
①
二萜类
②
二倍半萜类
③
单萜和倍半萜类
④
小分子脂肪族化合物
⑤
挥发性生物碱
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【简答题】
萜类是一类有天然烃类化合物，由两个或两个以上[填空1]分子聚合而成，符
合[填空2]通式。
【简答题】
萜类是一类有天然烃类化合物，由两个或两个以上[填空1]分子聚合而成，符
合[填空2]通式。
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