When an auxiliary boiler is panting and emitting black smoke, you should （）.<br>A:increase the fuel oil temperature<br>B:decrease the fuel oil temperature<br>C:decrease the fuel oil supply pressure<br>D:increase the air supply

When an auxiliary boiler is panting and emitting black smoke, you should （）.
A:increase the fuel oil temperature
B:decrease the fuel oil temperature
C:decrease the fuel oil supply pressure
D:increase the air supply

出自：海船船员证

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