峭壁、陡坡的工作场地或人行道上,冰雪、碎石、泥土应经常清理,靠外面一侧应设( )mm高的栏杆。
发布时间:2026-05-01
A.1050~1100
B.1150~1250
C.1050~1200
D.1150~1200
试卷相关题目
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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69528' and id < 4504970 and id<>'4504970' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69528' and id > 4504970 and id<>'4504970' order by id asc limit 5
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