更多"During the fuel injection period, f"的相关试题:
[单项选择]The high pressure in fuel injection system of the diesel engine is produced by the （）.
A. injector pump
B. fuel injector
C. governor
D. turbocharger
[单项选择]In conventional systems, the injection pressure（）, while it’s（）in common rail diesel engines.
A. fluctuates with the engine speed to some extent, independent of the engine speed
B. keeps constant at all engine speed, dependent on the engine speed to some extent
C. keeps constant at all engine speed, independent of the engine speed
D. is decided by the engine speed, constant at all engine speed
[单项选择]Either a low injection pressure or a leakage of piston rings is able to lead （）.
A. a high exhaust temperature
B. a high smoky exhaust
C. a high output
D. a high compression
[单项选择]A fuel injection valve opening at pressure lower than normal will result in（）.
A. late fuel injection
B. early fuel injection
C. high exhaust temperature from that cylinder
D. decreased effective stroke from that injector
[单项选择]The rate of pressure rise during the period following fuel ignition in a diesel will result in （）
A. valve overlap
B. volumetric efficiency
C. turbulence of the air change
D. fuel efficiency
[单项选择]During a period of whiteout，you should expect which of the following（）.
A. Snowfall or blowing snow
B. Lack of ability to estimate distance
C. Harsh contrast between sun-illuminated snow cover and the background
D. Hazy horizons with extensive mirage effects
[单项选择]According to Sinotime，during the period of this Charter，should the Vessel be requisitioned by the government of the Vessel’s nationality，hire to（）from the time of her requisition.
A. continue
B. stop
C. commence
D. cease
[单项选择]During a period of “whiteout”，you should expect which of the following?（）
A. Snowfall or blowing snow
B. Lack of ability to estimate distance
C. Harsh contrast between sun-illuminated snow cover and the background
D. Hazy horizons with extensive mirage effects
[单项选择]If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.
A. see the medic immediately
B. spray himself with foam or CO2
C. complete his task and then see the medic
D. remove the clothing and wash
[单项选择]A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.
A. proceed with fueling operation
B. have helicopter move to a safer location
C. wash spilled fuel away with a flood of water
D. clean spilled fuel with rags
[单项选择]During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure （）
A. effective cylinder scavenging and cooling
B. constant pressure from the turbochargers
C. cooler operation of the exhaust system
D. effective constant pressure for turbocharger operation
[单项选择]The temperature of the fuel oil received during bunkering operation is critical in determining the （）
A. expansion space to leave in a tank
B. flash point at which the fuel will burn
C. temperature to which the fuel must be heated
D. rate at which the fuel can be pumped during transfer operations
[单项选择]Valve overlap is the period during which （）.
A. the inlet valve is open
B. the exhaust valve is open
C. both valves are closed
D. both valves are open
[单项选择]Where a period is fixed during which freight is to be paid，the Shipowner must（）to deliver the goods throughout the whole of that period if he wishes to claim payment.
A. be had
B. be made
C. be prepared
D. be delivered
[单项选择]The period at high or low tide during which there is no change in the height of the water is called the （）.
A. range of the tide
B. plane of the tide
C. stand of the tide
D. reversing of the tide
[单项选择]During a（）period, as a newly commissioned SES, your IMN will be past to the other CESs.
A. 20 hour
B. 12 hour
C. 24 minute
D. 24 hour
[单项选择]Fuel injection systems meter fuel, atomize fuel, and （）.
A. create turbulence in the combustion chamber
B. aid in completing cylinder scavenging
C. inject fuel at the proper time
D. minimize fuel penetration into the cylinder
