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乳中水分的存在形式有()。A结合水B分散水C游离水D膨胀水E结晶水..
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我国外贸企业所使用的买卖合同包括______。()A.正式书面合.....
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The people of Savannah offered to surrender because they did not want their city to be set..
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以天然干酪为原料,经过再粉碎、加热调制而制成的产品称为()。..
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世界上第一份现代的银行信用证出现在______。()A.美国B.荷.....
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In the 1700s Savannah became a busy port city for exporting farm products and a city with ..
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