Emergencies & Hazards第 101 / 120 题
A tire on your trailer catches fire at a rest area and you have a 10 B:C extinguisher. What is the realistic limitation you must plan for?
a.The extinguisher will smother the tire fire in a few seconds
b.A burning tire holds heat deep inside and usually needs large amounts of water, so the extinguisher may only slow it while you keep people away and call the fire department
c.Tire fires go out on their own once the vehicle stops
d.Dry chemical is prohibited for use near tires
解析
Tires reignite because the fire burns inside the casing where a dry chemical agent cannot reach, so the priority is evacuation and calling for help. Tire fires do not self-extinguish, and dry chemical is not prohibited, it is simply not sufficient.
免费刷完整 120 道题库 — 无需注册。
同考点相关题目
- Your load is stacked high in a van trailer with the heaviest cases on top. Why is this dangerous?
- What is the maximum gross vehicle weight generally allowed on the Interstate highway system without a special permit?
- You are scaled at 21,000 pounds on the steer axle and 33,000 pounds on the drive tandem. What is the problem?
- You are hauling a placarded load of flammable liquid. Where must the shipping papers be kept while you are driving?
- What is the primary purpose of hazardous materials placards on a commercial vehicle?
- You pull into a rest area and smell fuel and see smoke from under the hood. What should you do?