单选题What is best suited for fighting a fire in a ballast control room?（）AAutomatic sprinkler systemBSteam smothering systemCDry chemical systemDCarbon dioxide system
单选题
What is best suited for fighting a fire in a ballast control room?（）
A
Automatic sprinkler system
B
Steam smothering system
C
Dry chemical system
D
Carbon dioxide system
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