问题

After a normal, or safety shutdown, automatic combustion control systems for an auxiliary

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

请帮忙给出正确答案和分析，谢谢！

参考答案

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