An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.
A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above
正确答案：A
干粉灭火器优于CO2灭火器的优点是它更远的作用距离
Anadvantageofadrychemicaloveracarbondioxidefireex
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