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问题
单项选择题 A型题
挤压制粒中，关键步骤是（）
A.混合
B.制软材（捏合）
C.制湿颗粒
D.干燥
E.整粒
答案
参考答案：
B
选择题
You ______ arrive at 6: 00 am, but you arrived at 7: 00 am last Sunday. Don't be late this time.
A. supposed to
B. were supposed to
C. supposed
D. are supposed to
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问答题 简答题
统计调查有什么特点？
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