Emergencies第 75 / 80 题
What role do warning devices like reflective triangles play in a hazmat emergency?
a.They repair the leak
b.They identify the material
c.They warn approaching traffic so vehicles do not drive into the danger zone
d.They call the fire department automatically
解析
Placing reflective triangles or other warning devices alerts oncoming traffic to stop or slow down before reaching a stopped or leaking hazmat vehicle. This prevents collisions that could worsen the emergency. Set them out as soon as it is safe.
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