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【单选题】
()的纸页结构决定了纸或纸板的吸收性能、光学性能和透气性能?A.
多相成分的非均态结构
B.
纤维定向排列的结构
C.
纤维层叠和交织的多孔网状结构
D.
两面差的表面结构
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【简答题】阅读理解 This is Peter. He is an Australian boy. He's going to show the Browns around London tomorrow. London is his favorite city. He lives there and works there. He knows London very well and he likes ...
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