网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.
A
telescopic pipe
B
large bore pipe
C
generating pipe
D
central pipe
参考答案
参考解析
解析：
暂无解析
更多 “单选题Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.A telescopic pipeB large bore pipeC generating pipeD central pipe” 相关考题
考题
Which system should be supplied to obtain the best efficiency and lowest emissions?A.Lean combustion principleB.Fuel oil systemC.Electrical control systemD.Electronic control system
考题
You have completed a crude oil wash．What action should be taken with the oil in the lines running to the washing machines ________．A.Open a COW nozzle forward and one aft and drain the line into the after tank by gravityB.Blow the line out using compressed airC.Pull a suction using the supply line pumpD.Close off all valves in the system and leave the oil in the line primed for the next crude oil wash
考题
A virtual rise in the center of gravity may be caused by ______.A.filling a partially filled tankB.using an on board crane to lift a freely swinging heavy objectC.emptying a partially filled tankD.transferring ballast from the forepeak to the after peak
考题
When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the interface clock rate determined（）。A、It is supplied by the CSU/DSU.B、It is supplied by the far end router.C、It is determined by the clock rate command.D、It is supplied by the Layer 1 bit stream timing.
考题
At the （）port, tankers pump the oil ashore using her own pumps.A、dischargingB、loadC、loadingD、charging
考题
单选题Large crosshead type engine generally has two lubrication systems, a function performed only by crankcase oil system is（）A
lubricatingB
coolingC
cleaningD
neutralizing
考题
单选题For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.A
oil sprayB
oil bathC
oil control ringsD
drilled passage through the camshaft
考题
单选题Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using（）.A
hot waterB
cold waterC
chemicalsD
crude oil washing
考题
单选题A diesel engine fails to start due to excessive water in the fuelBefore the engine can be started, the water should be removed from the（）A
fuel linesB
lube oil filterC
crank case pumpD
rocker arm reservoir
考题
单选题The operating water is supplied under the （）of an oil separator.A
sliding bowl bottomB
bowl hoodC
bowlD
filter units
考题
单选题Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.A
internal crankshaft passagesB
immersion in oilC
splash lubricationD
injection lubrication
考题
单选题In a disk-type lubricating oil purifier, （）A
the purifier driving gears are lubricated by the reclaimedB
oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling waterC
sealing water must never be supplied until after oil is fed to the unitD
deterioration of the bowl ring gasket will cause the purifier to lose its water seal
考题
单选题The pistons are cooled by （） oil from the forced lubrication.A
being givenB
givingC
supplyingD
being supplied
考题
单选题Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）A
double bottom fuel oil tank temperatureB
heater supply steam flowC
pressure of the fuel supplied to the burnersD
attemperator steam flow in the heater discharge circuit
考题
单选题“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?” asked the oil barge owner （）A
by using of fresh waterB
with compressed airC
by using of sea waterD
with chemical compound
考题
单选题The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.A
sufficient quantity； measuredB
measured quantity；sufficientC
excessive quantity；sufficientD
the less quantity the better；the more the better
考题
单选题A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）A
low TBN valueB
high alkaline reserveC
low flash pointD
high pour point
考题
单选题In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）A
lubricating oilB
dry sumpC
circulated tankD
wet sump
考题
单选题When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the interface clock rate determined?（）A
It is supplied by the CSU/DSU.B
It is supplied by the far end router.C
It is determined by the clock rate command.D
It is supplied by the Layer 1 bit stream timing.
考题
单选题Which of the following problems may occur when using fuel oil with a high sulphur content?（）A
Injection lagB
Lube oil dilutionC
Pre-ignitionD
Corrosion
考题
单选题The pistons are cooled by oil supplied from the forced （） system.A
fresh waterB
sea waterC
lubricationD
fuel oil
考题
单选题The Charterers to have option of using Owners’ bunker contracts. This sentence indicates that（）.A
The Charterers should sing new bunker contract with oil chandlersB
The Charterers can use the bunker contracts signed by the Owners with oil chandlersC
The Charterers shall not sign bunker contracts with oil chandlersD
The Charterers shall sign bunker contracts with oil chandlers
考题
单选题Just after stopping the engine while the oil is still circulating.Check that uniform oil jets appear from all the oil outlet grooves in the crosshead bearing lower shell and the guide shoes.The oil flow from （） must be compared from unit; there should be a similarity in the flow patterns.A
the piston cooling oil return pipesB
the main and crankpin bearingsC
thrust and intermediate bearingsD
stern tube and thrust bearings
考题
单选题Every（）shall be fitted with a cargo tank cleaning system using crude oil washing.A
existing crude oil tanker of 20000 tons deadweight and underB
new crude oil tanker of 20000 tons deadweight and underC
existing crude oil tanker of 20000 tons deadweight and aboveD
new crude oil tanker of 20000 tons deadweight and above
考题
单选题Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.A
telescopic pipeB
large bore pipeC
generating pipeD
central pipe
考题
单选题The crank chamber oil （）.A
can be recoveredB
is only supplied to cylindersC
only feeds the main bearingD
is a kind of detergent
热门标签
最新试卷