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【简答题】
平面汇交力系平衡的解析条件为：力系中所有各两个坐标轴上投影的代数和都（）。
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【简答题】(2013·江西九校高三联考)One fine afternoon I was walking along Fifth Avenue，____ I remembered that it was necessary to buy a pair of socks. Why I wish to buy only one pair is ____. I turned into the first sock...
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too loud
B.
didn’t clear
C.
not interested
D.
not care
【简答题】se décider à
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【简答题】One fine afternoon, I was walking along Fifth Street when I remembered that it was necessary to buy a pair of socks. Why I wished to buy only one pair was unimportant. I turned into the first sock sho...
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