【单选题】【消耗次数：1】
热解炭经活化后制得炭基吸附剂，碘吸附值提高到（）mg/g以上，可用于水体净化和土壤修复。
①
A.600
②
B.700
③
C.800
④
D.900
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相关题目
【单选题】
以硅胶为吸附剂的柱色谱，分离极性较弱的物质时宜选用的流动相是
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