【单选题】在原子吸收分光光度法中,原子化器的作用是()。
【简答题】A.They will play tennis or baseball. B.They will go bicycling or hiking. C.They will go bowling. D.They will not have sports.
【简答题】香豆素类化合物因具有内酯结构,可溶于碱液中,因此可以用____ ____ ____法提取
【单选题】在原子吸收分光光度法中,原子化器的作用是
【单选题】What will they do next?
A.
They will have a rest.
B.
They will have a walk.
C.
They will have a game.
【简答题】A.They will play tennis or baseball. B.They will go bicycling or hiking. C.They will go bowling. D.They will not have sports.
【简答题】A.They will be fined。 B.They will be closed。 C.They will get a warning。 D.They will lose customers。
【简答题】香豆素因具有内酯结构,可溶于碱液中,因此可以用{1}法提取,小分子香豆素因具有{2},可用水蒸气蒸馏法提取。