单选题：7.食品千操剂应无毒、无味、无腐蚀性及环境友好。下列说法错误的是

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题目内容：
7.食品千操剂应无毒、无味、无腐蚀性及环境友好。下列说法错误的是 A．硅胶可用作食品干操剂
B．P2O5不可用作食品干操剂
C．六水氯化钙可用作食品干燥剂
D．加工后具有吸水性的植物纤维可用作食品干燥剂
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