單項選擇題

The amount of chloride content in the water of an auxiliary boiler can be reduced by（）

A.adding hydrazine
B.blowing down the boiler
C.adding phenolphthalein
D.adding a sulfite chloride scavenger

你可能感興趣的試題

The purpose of designing some waste heat boilers with sinuous fire tubes, is to（）

A.increase exhaust gas velocity through the boiler
B.reduce accumulations of carbon deposits on the heat transfer surfaces
C.eliminate exhaust gas pulsations and noise
D.increase the rate of heat transfer to the waterside

單項選擇題

The water in an auxiliary boiler should be chemically tested daily for alkalinity and（）

A.soap hardness
B.nitrog encontent
C.chloride content
D.dissolved CO₂

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The amount of chloride content in the water of an auxiliary boiler can be reduced by（）

你可能感興趣的試題

The purpose of designing some waste heat boilers with sinuous fire tubes, is to（）

The water in an auxiliary boiler should be chemically tested daily for alkalinity and（）

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久