更多"The maximum pressure developed by a"的相关试题:
[单项选择]Generating tubes in waste heat boilers are finned to （）.
A. reduce gas flow turbulence
B. prevent exhaust gas corrosion
C. increase the rate of combustion
D. increase the rate of heat transfer
[单项选择]Diesel engine waste heat boiler construction is usually of the fire-tube or（）
A. cyclone furnace boiler type
B. dry back boiler type
C. water-tube type
D. critical circulation boiler type
[单项选择]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
[单项选择]An exhaust gas bypass is installed on a waste heat boiler in order to （）.
A. bypass exhaust gas at high loads to prevent excessive back pressure
B. bypass a portion of the exhaust gas at peak loads for better efficiency
C. recycle exhaust gas to the turbocharger
D. minimize moisture condensation in the boiler gas passages at low loads
[单项选择]A waste heat boiler is installed on some diesel propelled vessels to （）.
A. provide steam for emergency propulsion
B. provide steam for the turbo-generator
C. heat the waste water tanks
D. steam for warming engines
[单项选择]A SECONDARY function of a waste heat boiler is to （）.
A. reduce engine exhaust noise
B. reduce engine back pressure
C. increase engine cycle efficiency
D. increase turbocharger efficiency
[单项选择]The PRIMARY function of a waste heat boiler is to （）
A. reduce engine exhaust noise
B. reduce engine back pressure
C. recover heat which otherwise would be lost
D. increase turbocharger efficiency
[单项选择]Two well-developed high pressure areas may be separated by a（）.
A. Hill of low pressure
B. Trough of low pressure
C. Valley of low pressure
D. Ridge of low pressure
[单项选择]Improper maintenance of an automatic auxiliary boiler oil burner could result in （）.
A. fuel pump failure
B. fan motor failure
C. increased feedwater consumption
D. decreased boiler efficiency
[单项选择]Which action should be taken when an auxiliary boiler in is operation?（）
A. Clean all electrical connections
B. Lift the relief valves by hand
C. Inspect and clean all solenoid valves
D. Inspect for oil and water leaks
[单项选择]The soot blowers are operating in the oil fuel boiler the air/fuel ratio must （） throughout the action, and blowers greased after use.
A. be increased
B. be decreased
C. remain constant
D. either be increased or remain constant
[单项选择]Waste oil should（）
A. be treated according to the C-Es command exactly
B. be treated according to MARPOL
C. accumulate in bilges or on tank tops in accordance with MARPOL
D. discharge to sea at the specified areas
[单项选择]The sum of the sensible heat and the latent heat of any substance is known as （）.
A. total heat
B. residual heat
C. specific heat
D. superheat
[单项选择]You intend to discharge medical or hazardous wastes ashore MARPOL annex V requires you to notify a receiving port or terminal in advance.How much advance notice require?（）
A. 12 hours
B. 24 hours
C. 48 hours
D. Advance notification is not required
[单项选择]During waste clothes being charged into an incinerator, the auxiliary burner（）.
A. should be stopped manually
B. keeps the combustion as usual
C. would be cut off by an interlock
D. would replace the waste oil burner and keep going on
[单项选择]Deviation which is maximum on intercardinal compass headings may be removed by the（）.
A. Flinders bar
B. transverse magnets
C. fore-and-aft magnets
D. soft iron spheres on the sides of the compass
[单项选择]Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
A. inspect
B. impairs
C. impacts
D. insects
[单项选择]Fueling activities（）waste liquids and vapor releases to air.
A. commence
B. generate
C. give
D. have
