网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
单选题
Increasing the temperature of a fuel will reduce its ().
A
viscosity
B
pressure
C
resistance
D
setting point
参考答案
参考解析
解析:
暂无解析
更多 “单选题Increasing the temperature of a fuel will reduce its ().A viscosityB pressureC resistanceD setting point” 相关考题
考题
For the fuel oil purifier higher throughput and more efficient process can be achieved if the fuel is0
A.viscosity a heated to reduce itsB.cooled to reduce its temperatureC.heated to reduce its densityD.heated to reduce its gravity
考题
As its temperature rises, the volume of fuel oil in the tanks will ______.A.remain the sameB.increaseC.decreaseD.can’t be comfirmed
考题
Airlines are already increasing their price on the____that fuel prices are going to rise.A.consumption
B.destruction
C.assumption
D.presumption
考题
单选题Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?()A
To prevent internal damage form local overheatingB
To ensure the fuel nozzles are flushed cleanC
To clear the smoke stackD
To let the waste heat boiler reduce its rate of steam generation
考题
单选题The main purpose of warming the parts of the main engine is ()A
to reduce heat stressB
to reduce low temperature corrosionC
to improve firing and starting performanceD
fuel saving
考题
单选题() is the temperature at which a liquid fuel gives off sufficient vapor to form an ignitable mixture near its surface.A
Setting pointB
Dew pointC
Flash pointD
Lean point
考题
单选题While a ship with twin screw is making a turn, in order to prevent overload, the duty engineer should ()A
reduce the fuel feeding of main engine of inner propellerB
reduce the fuel feeding of main engine of outer propellerC
firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propellerD
reduce fuel feeding of two engines at the same time
考题
单选题The (auto)ignition temperature is that temperature atwhich().A
no spark or flame is required to ignite gas or vaporB
a fuel begins to give off explosive vaporsC
a fuel if ignited will continue to burnD
a 1% mixture of the fuel with air will explode
考题
单选题When preparing a ship for heavy weather,fuel oil day tanks should be().A
pumped overboard to calm the seasB
drained to the lower hull to reduce free surfacesC
filled to ensure that sufficient fuel oil is available during a lengthy emergencyD
partially drained to increase free surfaces in order to reduce motions
考题
单选题Exhaust temperature increases in all cylinders, the possible cause may be() (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passagesA
(1)+(2)B
(1)+(3)C
(2)+(3)D
(1)+(2)+(3)
考题
单选题Low cylinder compression pressure and a high exhaust temperature may indicate ()A
early fuel injection timingB
leaking valvesC
a continuously open scavenge air portD
low cooling water temperature
考题
单选题As its temperature rises, the volume of fuel oil in the tanks will ().A
remain the sameB
increaseC
decreaseD
none of the above
考题
单选题To successfully reduce an excessively high diesel engine exhaust gas temperature, you should ().A
reduce the engine driven fuel pump outlet pressureB
retard the fuel injector timing to reduce powerC
increase the fuel rack settingD
reduce the load on the engine
考题
单选题In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary?()A
its pressure and temperature are both loweredB
its pressure and temperature are both raisedC
its pressure is lowered and its temperature is raisedD
its pressure is raised and its temperature is lowered
考题
单选题The ignition quality of diesel fuel is indicated by its()A
octane numberB
cetane numberC
viscosity in Saybolt secondsD
air fuel ratio
考题
单选题A fuel injection valve opening at pressure lower than normal will result in().A
late fuel injectionB
early fuel injectionC
high exhaust temperature from that cylinderD
decreased effective stroke from that injector
考题
单选题One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to ()A
increase scavenge air pressureB
reduce fuel booster pump pressureC
adjust the fuel rackD
retard fuel injector timing
考题
单选题The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the ().A
quantity of fuel to be receivedB
flash point of the fuel as it is receivedC
fuel temperature as it is receivedD
viscosity of the fuel being received
考题
单选题The principal purpose of sub-cooling liquid refrigerant prior to its entering the expansion valve is to ().A
increase the refrigerating effect, by decreasing the amount of flash gasB
allow the refrigerant to enter the throttling device in a saturated conditionC
increase the refrigerating effect by increasing the amount of flash gasD
minimize the temperature drop of the liquid as it passes through the solenoid valve to the outlet side
考题
单选题Sub-cooling is a method of reducing the temperature of the liquid refrigerant below its ().A
freezing pointB
floc pointC
condensing temperatureD
compression temperature
考题
单选题Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce().A
cold corrosion of the nozzlesB
fuel viscosity for better atomizationC
carbon accumulation on the nozzlesD
fuel detonation in the cylinders
考题
单选题The temperature of the fuel oil received during bunkering operations is critical in determining the()A
expansion space to leave in a tankB
flash point at which the fuel will burnC
temperature to which the fuel must be heatedD
rate at which the fuel can be pumped during transfer operations
考题
单选题When restarting a heavy fuel diesel engine that has been stopped for some time, the engine should()A
increase the starting air pressureB
use a higher than normal cranking speedC
increase the fuel injection pressureD
use a fuel having a lower ignition temperature
热门标签
最新试卷