皮皮学，免费搜题
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【单选题】
热回流提取浓缩机组的特点不包括
A.
提取过程中热的溶剂连续加入药面，由上至下通过药材层，产生高浓度差，有效成分提取率高
B.
提取与浓缩同步进行，时间短，效率高
C.
浓缩的二次蒸气作为提取的热源，抽入浓缩器的浸出液与浓缩的温度相同，可节约50％以上的蒸气
D.
提取过程中溶剂一次加入密闭循环使用，药渣中的溶剂均能回收
E.
热回流提取浓缩机组与多功能提取罐比较，不适合肉质性较大的中药材。
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