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重轨腿内侧刮伤主要是万能部分卫板造成的()

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What types of sports do you like watching or playing?(Why?)

轧机刚度随轧制速度、来料宽度变化而变化()

Do you think companies should provide sports facilities for their staff?(Why?)

Do you ever feel overworked?(Why?/Why not?)

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