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【单选题】
From the invitation we can tell that ______.A.
Liu Mei and Lin Tang will attend the farewell party
B.
only Mr and Mrs Lin will travel to Australia
C.
the Lin family have been to Australia before
D.
the Liu family will not return from Australia
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【简答题】（11分）近年来，乳酸成为研究热点之一。乳酸可以用化学方法合成，也可以由淀粉通过发酵法制备。利用乳酸 为原料制成的高分子材料具有生物兼容性，而且在哺乳动物体内或自然环境中都可以最终降解成为二氧化碳和水。乳酸还有许多其他用途。 （1）请写出乳酸分子中官能团的名称 、 。 （2）乳酸能与纯铁粉反应制备一种补铁药物 该反应中的还原剂是____________ （3）乳酸聚合成的纤维非常适合做手术缝合线，...
【简答题】请简述为什么要对客户分级管理,对于重要客户,你认为要做好哪些方面的工作?
【简答题】发酵过程补料的内容是什么？
【单选题】Mr. John wanted to go hunting, but he didn’t want to go fishing, ___.
A.
so did his son
B.
neither did his son
C.
nor did his son
D.
so it was with his son
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A.
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B.
连续培养对蒸汽灭菌的负荷更重
C.
连续培养过程中要特别注意培养基流加的速率
D.
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【简答题】W h at did Volvo want by 2020?
【单选题】The author did not want to do what the manager told him to because______.
A.
he was afraid he could not get the money back
B.
he didn't want to go to such a neighbourhood
C.
he didn't know the man he was working for
D.
he was waiting for someone from the airport
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