单项选择题
The water in an auxiliary boiler should be tested for chloride content to determine （）.
A.total dissolved solids
B.salt contamination
C.water hardness
D.chlorine contamination
点击查看答案&解析
相关考题
-
单项选择题
Cooling the intake air supplied to a diesel engine will （）.
A.reduce mean effective pressure
B.decrease average compression pressure
C.decrease air charge density
D.increase power output -
单项选择题
Excessive vibration of an automatically fired auxiliary boiler can be caused by （）
A.air or water in the furnace
B.combustion pulses
C.fuel oil pump failure
D.flame failure -
单项选择题
When there is a flame failure in an automatically fired auxiliary boiler, the （）.
A.air supply is shut off
B.fuel supply is shut off
C.water supply is shut off
D.safety valve lifts
