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【判断题】
硫氰酸钾法测定食品中铁含量原理是在碱性条件下，二价铁与硫氰酸钾作用生成血红色的硫氰酸铁络合物，颜色深浅与铁离子浓度成正比。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】（）是指人们用于体育的个人支出。
【简答题】年度、半年度财务会计报告应当包括（ ）。
【单选题】Thirty years earlier, the judge of the town received some complaints about a bad smell coming from Emily's house. What did people think caused the smell?
A.
People in the town think that the smell must be caused by the garbage around Miss Emily's house.
B.
People in the town think that the reason of the smell must be the negro servant's unfulfilling his obligation.
C.
People in the town think that the smell must be caused by the discarded industrial waste.
D.
People in the town think that the smell must be caused by the discarded cats and dogs.
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