142.易燃物品与工作区域保持至少 50 英尺的距离。( )

　A maximum distance of 50 feet is required between consumable materials and the work area.

　Keep flammable materials at a minimum distance of 50 feet from the work area.

　Explosive materials must be kept at least 50 feet away from the work area.

答案解析

正确答案：B

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