在一些高档茶叶、点心等食品的包装盒中有一个小袋，将小袋打开，可看到灰黑色粉末，其中有些已变成棕褐色。将灰黑色粉末溶于盐酸，得浅绿色溶液。取上层清液滴入几滴氯水，再滴入KSCN溶液后溶液马上出现血红色。以下结论不正确的是
| A．该灰黑色粉末作抗氧化剂 |
| B．该灰黑色粉末不可食用 |
| C．小袋中原来装有铁粉 |
| D．小袋中原来装有Fe2O3 |
相关试题
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
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