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2017建筑安全员c证考试题做证+V:（510730800）

autumn background

a table topped with books and headphones

a concrete structure with graffiti on the side of it

a bird sitting on top of a rock next to flowers

man sitting while resting his arms on his knee inside concrete building

a bridge over a body of water with a building in the background

a tall white building with two windows and a clock

a building with a flag from the roof

a clock on the side of a building

grayscale photo of bare trees

a multi - colored building with a lot of windows

a bird sitting on top of a rock next to flowers

Mature man engineer standing on construction site, holding blueprints.

a bridge over a body of water with a building in the background

a black and white photo of a woman teaching children

a clock on the side of a building

grayscale photo of bare trees

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