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单选题
Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank?()
A
Commence draining that tank as quickly as possible
B
Seal off all vents to that tank
C
Activate the CO2 system to that tank
D
Shut off the steam heating coils
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Open the machine on both ends so as to allow the air and dust to escapeB
Be certain that the circuit breaker is opened and tagged on the feeder panelC
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