1.A trench is 6 feet deep and 55 feet long. According to excavation safety requirements, how many access ladders are required?
1.一个沟槽深度为6英尺，长度为55英尺。根据挖掘安全要求，需要设置多少个上下通道梯？
2.When remodeling a building containing asbestos-containing materials, which action should NOT be performed?
2.在改造含有石棉材料的建筑物时，以下哪项操作不应进行？
3.When working on the second story of a structure, which safety measure is the most critical?
3.在建筑物第二层进行施工时，哪项安全措施最为关键？
4.For high-visibility safety apparel, where must the minimum required band of retroreflective material be located?
4.对于高可视性安全服装，要求的最低反光材料带必须位于什么位置？
5.Which type of scaffold is prohibited due to unsafe construction practices?
5.哪种类型的脚手架因施工方式不安全而被禁止使用？
6.Is the neutral conductor in a three-phase electrical system potentially hazardous?
6.三相电气系统中的中性线（Neutral Conductor）是否可能存在危险？
7.What is the first safety measure required when beginning roadway construction work?
7.开始道路施工工作时，首先需要采取的安全措施是什么？
8.Which OSHA recordkeeping form is used to document workplace injuries and illnesses?
8.OSHA用于记录工作场所伤害和疾病的表格是哪一个？
9.Before contacting 811 Underground Service Alert, what color marking should contractors use to identify the proposed excavation area?
9.在联系811地下设施警示服务（Underground Service Alert）之前，承包商应使用什么颜色标记拟开挖区域？
10.What is the primary safety advantage of using a sloped excavation system?
10.使用放坡式开挖系统（Sloped Excavation System）的主要安全优势是什么？
