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单选题
（）is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about（）
A
Inefficient scavenging；twice
B
Inefficient scavenging；1~8 times
C
Fewer strokes in a circle；twice
D
Fewer strokes in a circle；1~8 times
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更多 “单选题（）is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about（）A Inefficient scavenging；twiceB Inefficient scavenging；1~8 timesC Fewer strokes in a circle；twiceD Fewer strokes in a circle；1~8 times” 相关考题
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The text is mainly about _____.［A］ the advantage of having cosmetic surgery［B］ what kind of people should have cosmetic surgery［C］ the reason why cosmetic surgery is so popular［D］ the disadvantage of having cosmetic surgery
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The advantage claimed for repeating fairy stories to young children is that it ______.A) makes them come to term with their fearsB) develops their power of memoryC) convinces them there is nothing to be afraid ofD) encourages them not to have ridiculous beliefs
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While sailing in ballast under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine isA.the exhaust temperatureB.the speed of main engineC.the turbine rotation speedD.the power of main engine
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For _______the power is supplied by main switchboard directly not through sub-boardA.saving network costB.improving the reliability of supplying power to important loadC.preventing sequence reversingD.increasing the power Factor of important load
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Which of the following BEST describes the function of a redundant power supply?()
A. Provides additional diagnostic LEDsB. Reduces power consumptionC. Eliminates a single point of failureD. Reduces total cost of ownership
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What is a reason for implementing MPLS in a network？（）A、MPLS eliminates the need of an IGP in the core.B、MPLS reduces the required number of BGP-enabled devices in the core.C、Reduces routing table lookup since only the MPLS core routers perform routing table lookups.D、MPLS eliminates the need for fully meshed connections between BGP enabled devices.
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Which of the following BEST describes the function of a redundant power supply？（）A、 Provides additional diagnostic LEDsB、 Reduces power consumptionC、 Eliminates a single point of failureD、 Reduces total cost of ownership
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单选题During a presentation on the p5 machines， a customer asks the pSeries technical specialist a question regarding the differences between POWER4+ and POWER5. In addition to new advanced power management， SMT， and larger L2 and L3 caches in POWER5， which of the following describes some of the key improvements in POWER5？（）A
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Dynamic partitioning support and the L3 controller is now between L2 and main memory.C
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Dynamic partitioning support and the L3 controller is no longer between L2 and main memory.
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单选题The main advantage and chief characteristic of a Steulchen boom is that it can be（）.A
operated by one winchmanB
cradled on deckC
swung from one hatch to the adjacent hatchD
collared to the mast
考题
单选题Which advantage of making Hyderabad greener is NOT talked about in the passage?A
It helps people work better.B
It makes the city cleaner.C
It reduces crime.D
It makes it easier to exercise.
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单选题The main reason for the latest rise of oil price is ______.A
global inflationB
reduction in supplyC
fast growth in economyD
Iraq’s suspension of exports
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单选题After resolving the trouble of main power supply, main switch of emergency generator should（）, if power supply is refreshed.A
be switched off by the duty officerB
be switched on by the duty officerC
be switched off automaticallyD
be switched on automatically
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单选题（）is power supplied by main switchboard directly not through sub-board.A
Deck machineryB
Little power loadC
Some important loadD
stationary submersible pump
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单选题Emergency generator is installed on board mainly to （）A
connect to the busbar when the load increasingB
supply power specially to charging panelC
be put into operation during the ship arriving at or leaving portD
ensure the power supply to critical equipment after the main switchboard out of power
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单选题Worm geared automatic mooring winches are （） as the multi-start feature reduces the advantage of worm gear iethe high gear radio.A
popularB
commonC
in lead positionD
uncommon
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单选题The purpose of a main switchboard circuit breakers reverse-power trip is to （）.A
prevent main circuit overloadB
protect the circuit breaker blowout coilC
prevent alternator motorizationD
prevent low voltage tripout
考题
单选题Which of the following BEST describes the function of a redundant power supply？（）A
Provides additional diagnostic LEDsB
Reduces power consumptionC
Eliminates a single point of failureD
Reduces total cost of ownership
考题
单选题To （） , the power is supplied by main switchboard directly not though sub-board.A
save network costB
improve the reliability of supplying power to important loadC
prevent sequence reverseD
increase the power factor of important load
考题
单选题（） is (are) not power supplied by main switchboard directly.A
Steering gear and windlassB
Navigation light and radio power panelC
Navigation device power boxD
Daily fresh water pump
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单选题Name one major advantage of transporting gas under refrigeration.（）A
It increases its volumeB
It reduces its volumeC
It has less product per volumeD
None of the above
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单选题In comparison to electric power，hydraulic power for jacking systems has the advantage of（）.A
better control capabilitiesB
less maintenance and repairC
fewer personnel needed during jackingD
less preload needed
考题
填空题What is another advantage of working at home?It reduces ____.
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