1.An employer or contractor performing asbestos-related activities must register annually when disturbing more than how many square feet of asbestos-containing construction material at a single jobsite?
1.当雇主或承包商在单一施工现场拆除超过多少平方英尺含石棉建筑材料时，必须每年进行石棉作业注册？
2.Identify the type of eye protection shown in the image.
2.识别图片中所示的眼部防护用品类型。
3.What are the two most commonly used ladder types in general construction?
3.一般建筑施工中最常使用的两种梯子类型是什么？
4.Identify the type of scaffold shown in the image.
4.识别图片中所示的脚手架类型。
5.A scaffolding permit is required when a scaffold structure reaches how many stories or higher?
5.当脚手架结构达到多少层或以上时，需要申请脚手架许可证？
6.Before beginning asbestos-related work, how much advance notice must contractors provide to DOSH?
6.开始石棉相关作业前，承包商必须提前多久向DOSH提交通知？
7.Cal/OSHA requires which two types of grounding systems?
7.Cal/OSHA要求哪两种接地系统？
8.What are the two primary methods used to protect workers from electrical hazards?
8.保护工作人员免受电气危险的两种主要方法是什么？
9.Which of the following is NOT classified as a type of fire extinguisher?
9.以下哪项不属于消防灭火器类型？
10.Shoring and bracing systems are required when excavating in which types of soil conditions?
10.在哪些土壤条件下进行开挖时，需要设置支护和支撑系统？
