单项选择题

EMERGENCY PROCEDURES for
Minor Chemical Spills

ATTENTION:
Certain experiments require the handling of hazardous chemicals and materials. Please be familiar with the following emergency procedures.
GET AWAY. Extinguish any ignition sources (burners, appliances, etc.) and move to a safe distance.
2. DETERMINE the substance spilled, extent of the spill and degree of hazard. Block off the area.
3. GET HELP. if the spill cannot be handled safely using the equipment and personnel present, activate fire alarm and call 911 for emergency assistance and Security at 777.
4. ASSESS INJURIES. If anyone is injured, call 911.
5. CLEAN UP SPILLWITH PROPER EQUIPMENT AND MATERIALS. Select proper personal protective equipment and clean-up materials for the spill. Place contaminated materials in a container designated for hazardous waste.
6. DISPOSAL. Contact Environmental Health and Safety personnel. Absorbed materials remain hazardous. Treat them with care.
How should contaminated materials be disposed of

A. They should be burned.
B. They should be rinsed thoroughly with water.
C. They should be placed outside.
D. They should be placed in special containers.