單項(xiàng)選擇題

The boiler feed water check valves are located on the （）

A.feed pump suction line
B.hot well
C.shell of the feed heater
D.feed lines to the boiler

你可能感興趣的試題

The water level in a steaming auxiliary boiler will always （）

A.rise when the steam pressure is increased
B.remain constant as long as the feed pump operates
C.fall when the steam pressure is decreased
D.vary as the steam demand changes

單項(xiàng)選擇題

The donkey boiler may be given a bottom blow （）

A.to raise water level
B.only while making steam
C.to remove scum
D.when fire are secured

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

The boiler feed water check valves are located on the （）

你可能感興趣的試題

The water level in a steaming auxiliary boiler will always （）

The donkey boiler may be given a bottom blow （）

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