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轻钢龙骨悬吊式天棚吊顶中,用于连接天棚楼板和吊筋的连接件是( )

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The women of the settlement were responsible for at the harvest festival.

A. making up
B. dancing
C. cooking
D. playing instrument

胶粘剂一般多为有机合成材料,通常是由_______、_______、增塑剂、稀释剂及填充剂等原料经配制而成。

电影通过视觉自留原理产生。()

A. 对
B. 错

proclaimed a National Day of Thanksgiving in 1789.

A. Franklin Roosevelt
B. Abraham Lincoln
C. George Washington
D. Governor Bradford

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