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）
Worm gear
参考答案
更多 “Worm gear” 相关考题
考题
The spur geared mooring winches have advantages over worm geared ones in .A.higher efficiency of the gear train while reversingB.the higher gear ratioC.the multi-start featureD.higher recovering speed
考题
Whichofthefollowingstoragesolutionsattachestoaservereitherthroughafiberchannel connectionorispresentedtotheserverviaiSCSI?()
A.DASB.NASC.SAND.WORM
考题
Wear occurring at the tips of the reduction gear teeth is usually the result of ______.A.surface fatigueB.fretting corrosionC.heavy overloadingD.gear misalignment
考题
控制面板显示EnvTem、GeaOilLev表示：（）A、Gear oil lev switch、Environ temperatureB、Gear oil level、Environment temperatureC、Gear oil level switch、Environment temperatureD、Gear oil level switch、Environment temp
考题
单选题The spur geared mooring winches have advantages over worm geared ones in（）A
higher efficiency of the gear train while reversingB
the higher gear ratioC
the multi-start featureD
higher recovering speed
考题
单选题An advantage of a helical gear pump over a simple gear pump is that the helical gear pump is capable of （）.A
maintaining a steadier speedB
delivering liquids over greater distancesC
operating for longer periods of timeD
producing a smoother discharge flow
考题
单选题Which of the following is NOT true according to the passage?（）A
Both the main steering gear and the auxiliary steering gear should be operatedB
The alarms fitted to the remote control system should be operatedC
The emergency generator compartment should be checkedD
The communication system between the bridge and the steering gear compartment should be operated
考题
单选题A vessel is “engaged in fishing” when（）.A
her gear extends more than 100 meters from the vesselB
she is using any type of gear，other than linesC
she is using fishing apparatus which restricts her maneuverabilityD
she has any fishing gear on board
考题
单选题Before starting the turning gear, （） should be worked by hand to minimize corrosive action on the liners.A
the indicatorsB
the starting valvesC
the cylinder lubricatorsD
the turning gear
考题
单选题（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.A
The driven gearB
The driveC
The greaseD
The lubricating oil
考题
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
考题
单选题Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by （）A
corrosion on the gearsB
excessive gear speedC
dirt in the oilD
misalignment of the gears
考题
单选题Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear（）A
must churn the oil in the sumpB
is connected to the propeller shaftC
is driven at the highest RPMD
compensates for alignment variations between the engine and pinion gear
考题
单选题The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the（）.A
deckB
head of the boomC
heel of the boomD
mast or king post
考题
单选题With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect?（）A
Only one pump should be used at any timeB
The ship speed should be reduced to 70% of the normalC
Watch keeping of the steering gear should be increasedD
Limitations of the steering gear should be logged but the bridge need not be informed
考题
单选题With reference to rules governing steering gear, which one of the following rules is incorrect? （）A
It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliaryB
The auxiliary gear could be power operated in passenger shipsC
The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speedD
All moving parts of the steering gear must be guarded against any possible damage
热门标签
最新试卷