用邻菲罗啉法测水中总铁，需用下列（）来配制试验溶液。A、水样_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题多项选择题

用邻菲罗啉法测水中总铁，需用下列（）来配制试验溶液。

A、水样

B、NH2OH·HCI

C、HAc-NaAC.

D、邻菲罗啉

答案

参考答案：A, B, C, D

选择题

_________ , but also they are good friends.[ ]

A. Not only does he know Jim

B. Not only he knows Jim

C. Not does he only know Jim

D. Does not only he knows Jim

问答题论述题

教师应采取哪些措施，促进学生创造性的培养。