单选题After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.Afurnace to be re-purgedBelectric charge to buildup in the igniterCfuel pump to restartDdram level to stabilize
单选题
After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.
A
furnace to be re-purged
B
electric charge to buildup in the igniter
C
fuel pump to restart
D
dram level to stabilize
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