Placarding第 64 / 80 题
What does a placard with the word 'OXYGEN' or an oxidizer symbol warn responders about?
a.The material is flammable liquid
b.The material can intensify a fire by supplying oxygen
c.The material is radioactive
d.The material is a corrosive acid
解析
Oxidizers and oxygen placards warn that the material can supply oxygen and make fires burn hotter and faster. Responders must keep these materials away from fuels and flames. Recognizing the placard helps them plan a safe response.
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同考点相关题目
- How close can a placard be to other signs or markings on the vehicle?
- What color is the flammable liquid (Class 3) placard?
- When must a placarded vehicle keep placards displayed?
- Why must a driver check that placards match the shipping papers?
- What is required for a placard's durability and appearance?
- If a shipment does not require placards, may the driver still need a hazmat endorsement?