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【单选题】
下列不属于冷冻食品包装应该注意方面的是（）。A.
冷冻食品本身的特性及其所要求的保护条件
B.
包装材料的包装性能和使用范围及条件
C.
可用氯化钙与石灰使其更好的冷却
D.
包装整体结构和包装材料对冷冻食品的影响
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皮皮学刷刷变学霸
举一反三
【单选题】The story shows that President Coolidge______.
A.
was a man of few words, but with humour
B.
was bad-tempered, but very polite to women
C.
was always quiet, and had no sense of humour
D.
was often silent because he hated people changing his habit
【单选题】Which of the following is TRUE about Charlie Chaplin?
A.
He was honoured with an Oscar after death.
B.
His silent movies are still popular today.
C.
His birth brought poverty to his family.
D.
He was famous for his funny words.
【单选题】You want to know my age? __________? [two friends]
A.
Could I ask why you'd like to know
B.
May I ask the reason why you want to know
C.
Why do you ask
【单选题】The story shows that President Coolidge__________ ．
A.
was always quiet，and had no sense of humor
B.
was bad-tempered，but very polite to women
C.
was a man of few words，but with humor．
D.
was often silent because he hated people changing his private life
【简答题】按照交易的参与主体，电子商务可以分为哪几类？
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