单项选择题

The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.

A.seawater contamination
B.frequent surface blows
C.dissolved oxygen deaeration
D.frequent bottom blows

点击查看答案&解析

上一题目录下一题

单项选择题

A.total dissolved solids
B.salt contamination
C.water hardness
D.chlorine contamination

单项选择题

A.reduce mean effective pressure
B.decrease average compression pressure
C.decrease air charge density
D.increase power output

单项选择题

A.air or water in the furnace
B.combustion pulses
C.fuel oil pump failure
D.flame failure