题目内容

The ratio of the double-unit formula Kaolin clay normally consists of 70% kaolin.

A. 对
B. 错

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Using Kaolinhasincreased thecontent ofaluminum trioxidein theporcelain body.

A. 对
B. 错

The material should be kneaded and pressedonly for theassociability.

A. 对
B. 错

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