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
Because of the resulting higher pressures in the cylinder from the combustion of this greater mass of fuel, and the larger diameters, the liner must be made （） at the top to accommodate the higher stresses, and prevent cracking of the material.
A
thinner
B
thicker
C
smoother
D
rougher
参考答案
参考解析
解析：
暂无解析
更多 “单选题Because of the resulting higher pressures in the cylinder from the combustion of this greater mass of fuel, and the larger diameters, the liner must be made （） at the top to accommodate the higher stresses, and prevent cracking of the material.A thinnerB thickerC smootherD rougher” 相关考题
考题
Careers in the public sector are more attractive because of their.A. greater stabilityB. higher pay C. fewer applicationsD. better reputation
考题
Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to _____________.A.higher speed requiredB.flywheel-effectC.lower starting temperaturesD.higher compression pressures
考题
Because the timing of injection is crucial, _____ mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.A.gearsB.ramsC.barrelsD.cams
考题
听力原文：M: Good news! The current price of land we bought last year has increased greatly. How about reporting it in the profit and loss account?W: Wait a minute. According to the Prudence Concept, if the market price is higher than the cost, the higher amount is ignored in the accounts.Q: Why can't they record the gains right now?(16)A．Because of the prudence concept.B．Because of the materiality concept.C．Because of the matching principle.D．Because of the Dual Aspects Concept.
考题
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
考题
If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because theA.cylinder compression pressure may not be high enoughB.cylinder compression temperature may be too highC.fuel oil injection pressure may not be high enoughD.scavenge and purge process is incomplete
考题
If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in _____.A.the crankcase explosionB.lifting of the cylinder safety valveC.a scavenge fireD.opening of the manhole
考题
Refer to the exhibit. Network 10.0.0.0／8 is being advertised to autonomous system 65550 via both external links. Which statement about the preferred path to the 10.0.0.0／8 network is true? ()
A. Router R2 will be preferred because it has the higher neighbor IP address.B. Router R2 will be preferr ed because its neighbor has a lower autonomous system number.C. Router R1 will be preferred because it has a lower local preference.D. Router R2 will be preferred because it has a higher local preference.E. Router R1 will be preferred because its nei ghbor has the higher autonomous system number.F. Router R1 will be preferred because it has the lower neighbor IP address.
考题
The Dev － 1 and Dev －3 routers are OSPF neighbors over the Ethernet 0／0 connection. Based on the show ip ospf neighbor output from the Dev － 1 and Dev － 3 routers, which statement is true?()
A. Dev - 1 is the DR because it has a lower OSPF router IDB. Dev - 3 is the DR because it has a higher OSPF router priorityC. Both Dev - 1 and Dev - 3 are using the def ault OSPF router priorityD. Dev - 3 is the DR because it has a lower OSPF router IDE. Dev - 1 is the DR because it has a higher OSPF router priority
考题
单选题The fresh air coming in through the inner air ports, is compressed by（） to a higher pressure.A
the cylinder headB
the cross-headC
the moving pistonD
the stationary piston
考题
单选题Because the castings of smaller engines are not so big and heavy, （） and cylinder block may be made in one piece.A
the columnB
the jacketC
cylinder coverD
cylinder liner
考题
单选题Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to（）A
higher speed requiredB
flywheel-effectC
lower starting temperaturesD
higher compression pressures
考题
单选题Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in （）A
increased horsepowerB
reduced efficiencyC
increased heat lossD
lower cylinder pressures
考题
单选题Turbulence is created in the cylinders of a diesel engine to （）A
obtain injection lagB
help mix fuel and airC
increase combustion pressureD
utilize higher injection pressures
考题
单选题Less scale formation occurs in a flash evaporator than in a submerged tube evaporator because （）.A
the distillate produced has greater purityB
no boiling occurs on heat transfer surfacesC
evaporation occurs at a higher rateD
the incoming feed is at a higher temperature
考题
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.A
decreased piston to cylinder head clearanceB
increased exhaust system back pressureC
early fuel injection timingD
low scavenge air temperature
考题
单选题An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.A
oil foaming in the compressorB
higher than normal suction and discharge pressures with a higher box temperatureC
higher than normal discharge pressure with a normal box temperatureD
the compressor to run continuously
考题
单选题In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?（）A
DifferentialB
TrunkC
BarrelD
Valve-in-head
考题
单选题If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in （）.A
the crankcase explosionB
lifting of the cylinder safety valveC
a scavenge fireD
opening of the manhole
考题
单选题The longer the ignition delay period resulting from improper use of low cetane fuel, the （）A
less fuel will enter the cylinderB
higher the cylinder combustion temperatureC
more complete the fuel combustionD
more rapid the rise in combustion pressure
考题
单选题If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be（）A
early injection timingB
worn orifices in the injection nozzlesC
worn or scored cylinder linersD
using a fuel with too low of a cetane number
考题
填空题Conservationists are trying to save primary forests because they have much higher levels of biodiversity.____
考题
单选题All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are lowWhich of the following situations is responsible for this condition?（）A
Excessively early injection timingB
Combustion knockC
Leaking piston ringsD
Light load
考题
多选题What are three problems with the tail drop mechanism of managing interface congestion？（）AQueuing introduces equal delays for packets of the same flow， resulting in jitter.BWhen congestion occurs， dropping affects most of the TCP sessions， which simultaneously back off and then restart again.CAll buffers can temporarily be seized by aggressive flows， and normal TCP flows experience buffer starvation.DThere is no differentiated drop mechanism. Higher priority traffic is dropped in the same way as best-effort traffic.EIn TCP starvation， traffic exceeds the queue limit because of the bursty nature of packet networks. A router cannot handle multiple concurrent TCP sessions.FGlobal synchronization occurs because multiple TCP hosts reduce their transmission rates at random intervals in response to packet dropping
考题
单选题（） into the cylinder because no fuel can burn （） it.A
Air must be admitted；withoutB
Oil must be injected；withoutC
Air must be admitted；withD
Oil must be injected；with
考题
单选题As time goes on the organic material is buried deeper and hence（）higher temperatures and pressures.A
is made up ofB
is absorbed inC
is exposed toD
is known as
考题
单选题When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will indicated?（）A
Advanced ignitionB
Clogged air intakeC
Leaky exhaust valveD
High exhaust pressure
热门标签
最新试卷