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一级建造师资格证书有效期几年[做证，刻章+V:hao123bbs]

Side view of a merry female and a male constructor greeting each other at the building site

a black and white photo of a building with the number 2006 written on it

red paper lantern hanging

people walking between establishments with lanterns above

Civil engineer standing on a construction site, carefully studies important work documents

woman in black and white stripe shirt standing in front of store during daytime

Young female builder and experienced foreman in hardhats and workwear discussing sketch on blueprint by stack of building materials

a person holding a camera and a tripod

person in black and white long sleeve shirt and brown pants sitting on floor

Architect, civil engineer and worker looking at plans and blueprints, discussing issues at the construction site.

white ceramic cup on white ceramic saucer

orange and gray buildings

people walking between establishments with lanterns above

a very colorful building with a very tall ceiling

Young female builder and experienced foreman in hardhats and workwear discussing sketch on blueprint by stack of building materials

man in black jacket and brown pants

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