When is the connection concentrator enabled?()A、When the value of MAX_CONNECTIONS is greater than the value of MAX_COORDAGENTS.  B、When the value of MAX_AGENTS is greater than the value of MAX_CLIENTS.  C、When the value of NUM_AGENTS is greater than the value of MAX_AGENTS. D、When the value of NUM_CONNECTIONS is greater than the value of NUM_COORDAGENTS.

When is the connection concentrator enabled?()

  • A、When the value of MAX_CONNECTIONS is greater than the value of MAX_COORDAGENTS.  
  • B、When the value of MAX_AGENTS is greater than the value of MAX_CLIENTS.  
  • C、When the value of NUM_AGENTS is greater than the value of MAX_AGENTS. 
  • D、When the value of NUM_CONNECTIONS is greater than the value of NUM_COORDAGENTS.

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The officer in charge of the engineering watch shall notify the chief engineer without delay ____.A.in any emergency or if in any doubt as to what decision or measures to takeB.in the event of any impending action in machinery spaces that may cause reduction in ship's speedC.when isolating and bypassing machinery to be worked onD.co-operating with any engineer in charge of maintenance work

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单选题When reentering an engine room that has been flooded with CO2, the investigating team should initially().Aleave the access door partially openBenter from the lowest levelCenter from the highest levelDattempt to operate machinery

单选题When fighting a spreading fire resulting from a broken fuel line, you should FIRST ().Alook for a CO2 extinguisherBuse a soda acid extinguisherCshut off the fuel supplyDsmother the fire with rags

单选题Which operation should be done when launching an inflatable liferaft by hand?()AOpen the liferaft casingBTurn the valve on the CO2 cylinder to start inflationCMake sure the operating cord is secured to the vessel before throwing it over the sideDAfter inflation,detach operating cord from liferaft

单选题The most important thing to remember when launching an inflatable liferaft by hand is to().Aopen the CO2 inflation valveBopen the raft containerCensure that the operating cord is secured to the vesselDinflate the raft on the vessel,then lower it over the side

单选题A “fifteen-pound” CO2 extinguisher is so called because().Athere are fifteen pounds of CO2 in the containerBthe container,when full,weighs fifteen poundsCthe pressure at the discharge nozzle is l5 psiDthe empty container weighs fifteen pounds

单选题A fifteen-pound CO2 extinguisher().Acontains 15 pounds of CO2Bweighs 15 pounds when full of CO2Chas 15 pounds of pressure at the nozzleDweighs 15 pounds when empty

单选题CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when().Athe discharge valve is openBthe control box glass is brokenCpressure from the control cylinders is detectedDthe control cylinders have been completely discharged

单选题When should a fire be ventilated?()AWhen attacking the fire directlyBWhen using a steam smothering systemCWhen using the fixed CO2 systemDAll of the above

单选题Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?()AThe fire pump should be startedBThe boiler rims should be securedCThe fixed CO2 system should be initiated into actionDThe engine room ventilation should be secured

单选题How is the external flotation bladder of an immersion suit inflated?()AIt is inflated by a small CO2 bottle that is automatically tripped when the front zipper is at the top of the zipper trackBIt is inflated by a small CO2 bottle that is manually trippedCIt is inflated by blowing through an inflation tubeDIt inflates by seawater bleeding into the inflation bladder and reacting with a chemical

单选题How is the external flotation bladder of an immersion suit inflated?()AIt is inflated by a small CO2 bottle that is automatically tripped when the front zipper is at the top of the zipper trackBIt is inflated by a small CO2 bottle that is manually trippedCIt is inflated by blowing through an inflation tubeDIt inflates by sea water bleeding into the flotation bladder and reacting with a chemical therein

单选题A portable dry chemical fire extinguisher discharges by().Agravity when the extinguisher is turned upside downBpressure from a small CO2 cartridge on the extinguisherCair pressure from the hand pump attached to the extinguisherDpressure from the reaction when water is mixed with the chemical

单选题When fighting an electrical fire, you should first ().Astop ventilation to the areaBstop the vesselCsecure electricity to the circuitDapply CO2 to the fire

单选题Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?()AEngine room ventilation should be startedBMain engines should be securedCThe fire pump should be startedDThe fixed CO2 system should be activated

多选题When designing the coverage area for high call capacity, what two actions should be done with data rates and channels?()AAvoid channels with high AP co-channel interference.BUse channels with high AP co-channel interference to avoid channel roams.CSet the 2.4-GHz data rate of 5.5 Mb/s to required.DUse 5-GHz channels when possible.EUse 2.4-GHz channels when possible.

单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?()ACheck the tag to see when the extinguisher was last chargedBRelease a small amount of CO2; if the CO2 discharges,the extinguisher is acceptableCWeigh the extinguisher and compare the weight against that stamped on the valveDRecharge the extinguisher at least once each year

单选题Control valves of a CO2 system may be located within the protected space when().Ait is impractical to locate them outsideBthere is also a control valve outsideCthe CO2 cylinders are also in the spaceDan automatic heat-sensing trip is installed