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If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.
A . high steam pressure in the boiler
B . abnormally high feed water temperature
C . abnormally high boiler water temperature
D . steam demand exceeding feed pump capacity
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In a refrigeration system, if the cooling water to the condenser fails, the（）.
A . box temperature solenoid valve will close
B . expansion valve will close
C . compressor will shutdown
D . king valve will ope
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The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.
A . should agitate
B . should not agitate
C . should mix up
D . should not add u
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If the electric motor driving an air compressor fails to start, the cause may be a （）.
A . leaking unloader
B . tripped circuit breaker
C . control line leak
D . defective pop valve
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If a diesel engine fails to start，one of the likely causes is （）
A . low compression temperature
B . low ambient air pressure
C . high lube oil pump pressure
D . high fuel oil booster pump pressure
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A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）
A . Two switch ports will be needed on a switch， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.
B . Two switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.
C . Two switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， two different IP addresses will be needed.
D . One switch port will be needed on one switch， a splitter will be needed to split the connection， two ethernet cables will be needed for the server each connecting to two different Ethernet cards， and two different IP addresses will be needed.
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The drive motor will have a brake arranged to fail-safe, ieit will （） the load if power fails or machine is stopped.
A . lift
B . put
C . take
D . hold
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Companycom has a system running AIX 5.2 and wants to upgrade to AIX 5.3. What method would provide the quickest recovery if the upgrade failed?（）
A . Use alt_disk_install
B . Backup image to NIM server
C . Backup using mksysb to DVD-RAM
D . Apply the upgrade and do not commit
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When installed for bilge pumping or ballast duty, centrifugal pumps require a （） to remove air from the suction pipe.
A . air chamber
B . head lank
C . primer
D . prime mover
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For pumping the bilges，a 54 foot long “T-Boat”，which is not a ferry，but is certificated to carry 30 passengers，must be fitted with at least（）.
A . one fixed power pump and one portable hand pump
B . one fixed hand pump and one portable hand pump
C . two portable hand pumps
D . either "A" or "B"
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The simplest method to use for determining if a centrifugal pump is operating as designed, is to （）.
A . closely observe the pump discharge temperature
B . close off the discharge valve, and watch for a rise in pressure
C . momentarily close off the suction valve, and watch for a rise in pressure
D . use a clamp on ammeter and compare the readings to past record
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The fire pumps must be capable of delivering a total quantity of water at a defined head, not less than （） of the total bilge pumping capacity.
A . one-third
B . two-thirds
C . one-fourth
D . two-fourth
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The bilge system has been performing well; however, the aft starboard engine room bilgewell suddenly fails to be pumped outWhich of the following should be done first to determine the cause?（）
A、Open the bilge pump for inspection
B、Remove each of the manifold valves
C、Remove only the manifold valve to the affected bilge-well
D、Attempt to pump out another bilge well to determine if the entire system is affected.
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You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what action should be carried out?（）
A . Send the wiper into the well with only a scoop and pail
B . Remove the bilge manifold valve and attempt to back flush the line
C . Simultaneously operate all available bilge pumps
D . It is only necessary to transfer half the contents of a drum of degreaser into the bilge well
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If a diesel engine driving a generator turns over freely but fails to fire properly, the cause could be （）
A . excessive compression pressure
B . air in the fuel lines
C . high fuel pressure
D . excessive load
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What does the DSC control unit do if the GMDSS radio operator fails to insert updated information when initiating a DSC distress alert（）.
A . It will abort the transmission and set off an audible alarm that must be manually reset
B . It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situation
C . It will initiate the DSC distress alert and default information will automatically be transmitted
D . It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situatio
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On modern ships, centrifugal pump with a self-primer has replaced reciprocating pump as bilge pump because（）
A . centrifugal pump is cheaper than reciprocating pump
B . the size of centrifugal pump with same capacity is smaller than that of reciprocating pump
C . centrifugal pump makes maintenance easier than reciprocating pump does
D . all of the above
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A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency?（）
A . Two switch ports will be needed on a switch, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and one IP address will be needed.
B . Two switch ports will be needed on two different switches, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and one IP address will be needed.
C . Two switch ports will be needed on two different switches, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, two different IP addresses will be needed.
D . One switch port will be needed on one switch, a splitter will be needed to split the connection, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and two different IP addresses will be needed.
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A centrifugal bilge pump requires priming （）.
A . primarily to lubricate the shaft seals
B . due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
C . to initially unload the pump by having its head pressure equal to discharge pressure
D . in order to overcome the potential energy of water in the discharge line
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If a switch is working in the fail-open mode， what will happen when the switch’s CAM table fills to capacityand a new frame arrives？（）
A . A copy of the frame is forwarded out all switch ports other than the port the frame was received on.
B . The frame is transmitted on the native VLAN.
C . The switch sends a NACK segment to the frame’s source MAC address.
D . The frame is dropped.
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The drive motor will have a brake arranged to fail-safe, i√eit will （） the load if power fails or machine is stopped.
A . cast
B . put
C . hold
D . let out
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If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?（）
A . The wearing rings are excessively worn
B . The suction strainer is clogged
C . The discharge valve is clogged
D . The shaft is wor
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Anti-dopiing nation would be at a competitive disadvantage if other nations failed to ________.
