The ignition quality of a diesel fuel is indicated by the （）

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• Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.

  A . compression B . maximum C . rated D . oil

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• The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）

  A . auto-ignition point B . flash point C . burning temperature D . fire point

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• （）the demand of the shipper the Shipowner must issue a bill of lading giving certain particulars，e.g. quality of goods shipped，their apparent condition.

  A . In B . At C . By D . O

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• A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）

  A . low lube oil temperature B . low starting air temperature C . air bubbles in the fuel oil system D . water in the starting air system

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• The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as （）.

  A . chemical ignition B . spontaneous combustion C . chemical combustion D . radiation ignitio

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• The ignition quality of diesel fuel is indicated by its（）

  A . octane number B . cetane number C . viscosity in Saybolt seconds D . air fuel ratio

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• Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality  of voice calls？（）

  A . Increase the queue size of the voice class. B . Guarantee bandwidth during congestion to the voice class with a bandwidth command. C . Increase the tx-ring of the egress interface. D . Implement LLQ for the voice class. E . Decrease the rx-ring of the egress interface. F . Decrease the queue size of the voice class.

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• The film provides a deep（）into a wide range of human qualities and feelings.

  A . imagination B . insight C . fancy D . outlook

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• Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）

  A . electronic ignition system B . compression of air by the piston C . friction in the fuel injector D . fuel oil bearing system

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• The higher the cetane number, （） the ignition quality of the fuel.

  A . the worse B . the better C . the smaller D . the greater

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• Which of the listed factors will indicate the most about the ability of a fuel to ignite in a diesel engine?（）

  A . Viscosity B . Sulfur content C . Pour point D . Cetane number

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• When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）

  A . the amount of lube oil additives increase B . piston speeds increase C . injection pressure decrease D . engine speeds decrease

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• The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its （）.

  A . boiling point B . flash point C . viscosity point D . toxic point

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• Sometimes the bill of lading refers to the loading marks inscribed on the goods，and sometimes there（）a statement as to their quality.

  A . has B . provides C . is D . supplie

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• What are the three models of quality of service （QoS） in a network？（）

  A .  Resource Reservation Protocol （RSVP） B .  first-in， first-out （FIFO） C .  best-effort D .  CBWFQ E .  IntServ F .  DiffServ

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• The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the（）.

  A . flash point B . fire point C . upper explosive limit D . lower explosive limit

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• The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called （）.

  A . explosive range B . flash point C . ignition temperature D . combustion temperature

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• If ignited, which of the listed materials would be a class "B" fire?（）

  A . Magnesium B . Paper C . Wood D . Diesel Oil

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• The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.

  A . air bottle B . air compressor C . crank case D . combustion chamber

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• A bond rating of Aa or AA would mean that the quality of the bond is ________

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• Which of these criteria is NOT used in assessing the quality of a PEP?

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• From a professional standpoint, one reason for the decline in the quality of the interview is that ______.

  A．people are not so interested in politics B．interviewing techniques have remained much the same C．people are not so radical as in the 60s D．broadcasters consider the interview arrangement outmoded 此题为多项选择题。

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• Ｗhich of the following is related to higher-quality marriages？（)A.Financial security.B.A

  Ｗhich of the following is related to higher-quality marriages？() A.Financial security. B.An opulent weddin C.Desire for consistency. D.All of above

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• The quality of a batch of drug substances is judged according to

  A．product appearance B．the inspection report C．product melting point D．product color

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