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【单选题】
对于涤纶，下列说中正确的是（）A.
分子量与聚合时间无关
B.
属于杂链聚合物
C.
聚合机理是逐步 加聚
D.
属于三大合成原料中的橡胶
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【简答题】He decided to follow __________ the business first.
【判断题】总体来说，海关发票中的内容不必与商业发票或其他单据相一致。它的内容主要有商品的价值(VALUE)和商品的产地(ORIGIN OF GOODS)。( )
A.
正确
B.
错误
【简答题】A Frenchman went to a small Italian town and was staying with his wife at the best hotel there. One night, he went out for a walk alone. It was late and the small street was dark and quiet. Suddenly h...
【单选题】He decided on _____ chicken and vegetables, with apple pie to follow.
A.
barbecue
B.
roast
C.
toast
D.
boast
【简答题】The author decided to follow Michael’s example and believed that if he chose to be an optimist he might , and might have more .
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