单选题A feed pump for an auxiliary boiler might lose suction if the （）.Aboiler water level is lowBfeedwater is too hotCboiler steam demand is lowDfeedwater is too cold
单选题
A feed pump for an auxiliary boiler might lose suction if the （）.
A
boiler water level is low
B
feedwater is too hot
C
boiler steam demand is low
D
feedwater is too cold
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