英译汉：main shaft

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• The （） of the main shaft should be measured with a （）.

  A . clearance；calipers B . sinking；bridge gauge C . diameter；bridge gauge D . clearance；lead wire

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• In the process of the shafting management, special attention should be paid to（）

  A . on the sailing, the water in the aft peak tank should be excluded as much as possible B . the stuffing style ahead sealing shouldn’t have any water leaking out C . Simplex astern sealing shouldn’t have any oil leaking out D . Simplex ahead sealing can have some oil leaking out

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• （） are formed by abrasive particles entering the bearing and scoring the shaft.

  A . Grooves B . Recesses C . Ridges D . Ni

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• The center line condition of the transmission shaft can be checked by（）

  A . the border flange’s excursion and flection B . the both end shafts line’s accordance C . the border flange’s flection and the both end shafts line’s accordance D . the border flange’s accordance and both end shafts flection degree

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• During the deck repair,（） should be measured firstly before tail shaft is drawn out.

  A . the sinking of tail shaft B . the clearance of stern bearing C . the total flexure of both end bearing D . main engine crankshaft deflectio

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• During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?（）

  A . Flywheel inertia B . Admission of starting air C . The way of the vessel D . securing of fuel to the cylinder

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• The shaft and spare parts（） should be well greased in order to avoid corrosion.

  A . in the store room B . in the cylinder C . in the scavenge air box D . in the water box

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• Where a propeller shaft passes through the hull，water is prevented from entering by means of a（）.

  A . stuffing box B . propeller boss C . seacock D . stop-water

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• With（） the engine need not to be aligned with reduction gears or propeller shaft.

  A . Diesel engine propulsion B . Diesel electric propulsion C . Steam engine propulsion D . Gas turbine propulsio

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• Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）

  A . inside micrometer B . feeler gauge and straight edge C . adjustable trammel D . sighting device

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• In the management of the shafting, because（） carry heavy load and caused high temperature easily, it should be paid attention.

  A . the bearing near to the diesel engine B . the intermediate bearing near to the thrust bearing C . the intermediate bearing near to the sterntube D . the bearing located at the middle of the diesel engine and the sterntube

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• Which is not the maintenance work for shaft bearings in transmission system?（）

  A . check oil level in bearing sump B . check them for leakagec through end seals C . pump bilges in time D . check temperature

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• When the vessel shafting are installed, the slightly inclined of the shaft line should be rectified by（）

  A . adjusting the position of the intermediate bearing B . changing the position of the main engine installation C . adjusting the center line of the propeller D . changing the position of the thrust block

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• Most often （） is attached to the engine-propeller shaft for efficient electric power generation.

  A、An alternator B、An electric motor C、A diesel engine D、A main switchboard

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• During the dock repair, should be measured firstly before tail shaft drawn out（）

  A . the sinking of tail shaft B . the clearance of stern bearing C . the total flexure of shaft D . main engine crankshaft deflectio

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• In the navigation, cause the shafting over load most easily（）

  A . stopping the main engine suddenly B . changing the main engine running direction suddenly C . the sailing from the shallow water area to the deep water area D . the ship’s trim too much

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• Sealing in pump shaft is achieved by means of the （）.

  A . gasket B . packing C . washer D . spring

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• In the navigation（） cause the shafting over load easily.

  A . the stopping engine suddenly B . the sailing astern and changing direction suddenly C . the sailing from the shallow water area to the deep water area D . the ship’s trim too much

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• “A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）

  A . a centrifuge B . an electric motor C . a bowl assembly D . a driving motor

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• The spade and fork have longer shafts, providing better _______.

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• roofs symbolize bamboo shafts, which in turn represent youth and longevity.

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• Keep the hand- wheel and rotating shaft separated to avoid injury while milling ____high speed.

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• In the navigation____ cause the shafting over load easily.

  A.the stopping engine suddenly B.the sailing astern and changing direction suddenly C.the sailing from the shallow water area to the deep water area D.the ship’s trim too much

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• （）Turning the steering wheel turns the steering shaft to which a worm gear is attached within the steering gear box.

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