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【单选题】
对梳棉机锡林与道夫之间的作用描述正确的是A.
分梳作用,针齿交叉配置
B.
分梳作用,针齿平行配置
C.
凝聚作用,针齿交叉配置
D.
凝聚作用,针齿平行配置
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【单选题】Why is it difficult to learn names all over the world?
A.
There are many names all over the world.
B.
The names in different countries are different.
C.
Some names are very long, and some are very short.
D.
Some people have nicknames.
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