單項選擇題

If in doubt as to the true water level when a boiler is being oil-fired, you should （）.

A.take no measures
B.extinguish the fire as soon as possible
C.feed water to the boiler
D.open the blow down valve

你可能感興趣的試題

單項選擇題

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

單項選擇題

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

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

If in doubt as to the true water level when a boiler is being oil-fired, you should （）.

你可能感興趣的試題

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

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

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精