更多"Large crosshead type engine general"的相关试题:
[单项选择]Large crosshead type engine generally has two lubrication systems, a function performed only by crankcase oil system is（）
A. lubricating
B. cooling
C. cleaning
D. neutralizing
[单项选择]A common rail engine has only one or two high pressure pumps in operation at the same（）time, and the injection into each cylinder.
A. can’t be controlled very precisely
B. can’t be controlled as flexibly as the separate pump system
C. can be controlled as flexibly as the separate pump system
D. can be controlled more precisely and flexibly
[单项选择]Two-stroke engine turbocharging is achieved by two distinct methods, （） termed the constant pressure and the pulse system.
A. respectable
B. respectful
C. respective
D. respectively
[单项选择]The engine has one or two group of fuel pumps, depending upon （）.
A. the number of fuel valves
B. the number of cylinders
C. the speed of engine
D. the power of engine
[单项选择]When an engine is starting and has got a sufficiently high speed, say about 20 rpm,（）
A. the starting air supply is cut off and fuel is injected into the cylinders
B. the fuel feeding is cut off and the turning gear is put in
C. the starting air supply is cut off and turning gear is taken out
D. the electric blower is shut down and fuel is injected into the cylinders
[单项选择]A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task，using the fewest physical interfaces and without decreasing networkper formance？（）
A. Add two more FastEthernet interfaces.
B. Add a second router to handle the vlan traffic.
C. Use a hub to connect the four vlans with a FastEthernet interface on router.
D. Implement a router-on-a-stick configuration.
[单项选择]A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the （）.
A. atmospheric pressure
B. wind speed
C. relative humidity and dew point
D. wind chill factor
[单项选择]The first survey has two situations, one is changing （） survey, the another is making survey.
A. registry
B. ship hull
C. nationality
D. replacing machineries and electric devices
[单项选择] Your company has two servers that run Windows Server 2008 R2 named Server2 and Server3. Both servers have the DNS Server server role installed. Server3 is configured to forward all DNS requests to Server2. You update a DNS record on Server2. You need to ensure that Server3 is able to immediately resolve the updated DNS record. What should you do？（）
A. Run the dnscmd . /clearcache command on Server3.
B. Run the ipconfig /flushdns command on Server3.
C. Decrease the Time-to-Live (TTL) on the Start of Authority (SOA) record of na.contoso.com to 15 minutes.
D. Increase the Retry Interval value on the Start of Authority (SOA) record of na.contoso.com to 15 minutes.
[单项选择]Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
A. Alert the watch officer that a vessel is approaching the preset CPA limit
B. Warn of small targets that are initially detected closer than the outer guard zone
C. Guard against target loss during critical maneuvering situations
D. Sound an alarm for targets first detected within the zone
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]When reentering an engine room that has been flooded with CO2, the investigating team should initially（）.
A. leave the access door partially open
B. enter from the lowest level
C. enter from the highest level
D. attempt to operate machinery
[单项选择]On a large diesel engine installation, crankshaft axial alignment is maintained by the （）
A. piston rod guides
B. engine thrust bearing
C. crosshead bearing
D. main shaft flexible coupling
[单项选择]The development goals for a large marine engine are many often interact and in some cases even with each other（）
A. conflict
B. accord
C. harmonize
D. struggle
[单项选择]Stating a large propulsion diesel engine using diesel fuel during cold weather conditions can be made easier by （）
A. increasing the quantity of starting air
B. increasing the lube oil pressure
C. heating the engine fuel supply
D. heating the engine jacket water
[单项选择]The knot used to join two lines or two large hawsers for towing is called a（）.
A. square knot
B. carrick bend
C. sheet bend
D. bowline
[单项选择]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
A. it has a longer power stroke
B. more air gets into the cylinder each stroke
C. it develops twice as many power strokes at the same speed
D. higher combustion pressure is developed
