多項(xiàng)選擇題大孔樹脂廣泛應(yīng)用于天然產(chǎn)物的:()

A.分離
B.脫鹽
C.濃縮
D.鑒別
E.除去有機(jī)雜質(zhì)


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1.單項(xiàng)選擇題低交鏈度陽離子樹脂是指其含交鏈劑為:()

A.3%~6%
B.2%~3%
C.4%~5%
D.7%~12%
E.8%~10%

2.單項(xiàng)選擇題中交鏈度陰離子樹脂是指其含交鏈劑為:()

A.3%~6%
B.2%~3%
C.4%~5%
D.7%~12%
E.8%~10%

3.單項(xiàng)選擇題高交鏈度陰離子樹脂是指含交鏈劑為:()

A.3%~6%
B.2%~3%
C.4%~5%
D.7%~12%
E.8%~10%

4.單項(xiàng)選擇題中交鏈度陽離子樹脂是指含交鏈劑為:()

A.3%~6%
B.2%~3%
C.4%~5%
D.7%~12%
E.8%~10%

5.單項(xiàng)選擇題對聚酰胺層析洗脫力處于第三位的溶劑是:()

A.水
B.丙酮
C.甲酰胺溶液
D.乙醇
E.稀氫氧化鈉溶液