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【多选题】
按照受力的特点的不同，可以把大跨度屋盖钢结构分为体系 。A.
钢结构
B.
桥梁结构
C.
平面结构
D.
空间结构
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A.
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B.
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C.
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D.
considerable
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【简答题】Much later, retired from the Coast Guard and trying to make a living as a writer, I never forgot how those three "thank you" letters gave me an insight into how most human beings to about longing in s...
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