问题
单项选择题
规定1L水中含有2.419的氯铂酸钾和（）氯化钴时所产生的颜色深浅定为1°。
A、1
B、2
C、2.943
D、3.416
答案
参考答案：B
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规定1L水中含有2.419的氯铂酸钾和（）氯化钴时所产生的颜色深浅定为1°。
A、1
B、2
C、2.943
D、3.416
参考答案：B
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