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【单选题】
标准公差等级选择时,轴 一级配合。A.
高
B.
低
C.
相等
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】His hobby is to_________(collection)coinsfrom different countries.
【简答题】In L/C transaction．the buyer is unconditionally guaranteed payment．（ ）
【单选题】The fifth orange is____ of all.Give it to that small child.
A.
big
B.
bigger
C.
the bigger
D.
the biggest
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【简答题】His hobby is to 听 music after school.