Stern tube and strut(支柱) bearings lined with hardwood or rubber composition materials are lubricated with______.A.saltwaterB.graphite(石墨)C.light lubricating oilD.heavy lubricating oil
Stern tube and strut(支柱) bearings lined with hardwood or rubber composition materials are lubricated with______.
A.saltwater
B.graphite(石墨)
C.light lubricating oil
D.heavy lubricating oil
相关考题：
通常人们视HiPer Strut结构的前悬架结构为麦弗逊式悬架的进化版。下列关于两种悬架结构描述正确的是( )A.HiPer Strut结构悬架的响应速度较麦弗逊悬架有所提升B.HiPer Strut结构悬架的主销内倾角较麦弗逊悬架增大C.HiPer Strut结构悬架的体积较大，比麦弗逊悬架更占空间D.使用HiPer Strut结构悬架，对驾驶者的操作水平要求较高
When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?A.The propeller hub taper and shaft keyway should be inspected for cracks or corrosionB.The stern bearing alignment with the stern frame should be checkedC.The interior of the stern tube should be inspected for leaksD.The shaft liner should be removed and inspected for cracks
A mooring line leading at nearly right angles to the keel is a ______.A.spring lineB.bow lineC.stern lineD.breast line
A vessel towing a barge astern would show，at the stern ______.A.only a stern lightB.a towing light above the stern lightC.two towing lights in a vertical lineD.two white lights in a vertical line
What type of stern tube bearing has the least friction ________．A.Oil-lubricated bearingsB.Lignum vitaeC.Hard rubberD.Bronze bushings
The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the ______．A.bossB.knuckleC.skegD.strut
A mooring line that prevents a vessel from moving sideways away from the dock is a ___.A.bow lineB.breast lineC.stern lineD.spring line
Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. Raw materials are often exported by the countries that produce them to other countries where（）.Athey are consumedBthey are made into finished productsCthey are wasted
（）leads at right angles to the center line from the stern to the shore.A、An aft breast line.B、An aft springC、The stern lineD、A fore breast line
A line leading aft from forecastle to the shore is called（）.A、aft springB、breast lineC、stern lineD、forward spring
A（） leads at right angles to the center line from the forecastle to the shore.A、fore spring lineB、fore breast line.C、head lineD、stern line
A （）leads afterward from the stern to the shore.A、A . head lineB、B. breast lineC、C. stern lineD、D. spring line
A （）leads forward from the forecastle to the shore.A、head lineB、breast lineC、spring lineD、stern line
（）leads forward from the port or starboard quarter to the shore.A、An aft springB、An aft breast lineC、A fore breast lineD、A stern line
单选题EASE THE STRAIN ON THE STERN LINE means（）.ADon't take in the stern lineBTake in the stern lineCSend out the stern lineDHeave up the stern line
单选题What is NOT used as a stern tube bearing，on a large vessel? （）AWooden (lignum vitae) stripsBHard rubberCResin bonded compositionDBronze bushings
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.Raw materials are often exported by the countries that produce them to other countries where（）.Athey are consumedBthey are made into finished productsCthey are wasted
单选题To our surprise, the walls of the new bookstore ______ books.Aare lined withBis lined withChave lined with
单选题When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?（）AThe propeller hub taper and shaft keyway should be inspected for cracks or corrosionBThe stern bearing alignment with the stern frame should be checkedCThe interior of the stern tube should be inspected for leaksDThe shaft liner should be removed and inspected
单选题An excessive amount of water is prevented from entering a vessel using a water lubricated stern tube bearing by the use of the （）.Apropeller hubBlignum vitaeCshaft packingDlabyrinth seal
单选题A vessel has been equipped with an oil lubricated stern bearing and is undergoing a routine dry-dock.Which of the following inspection should be made when the tail-shaft has been drawn?（）AThe overall condition of the bearing surface should be examinedBThe shaft liner should be inspected for cracks and tested to insure a tight fitCThe stern tube should be tested for cracks with dye penetrantDall of above
单选题Exports are either raw materials or manufactured goods. Raw materials are products of the land， such as cotton， timber or rubber. Some raw materials， such as iron ore， come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export， for example， meat， sugar， or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold， dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case， it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods.The best title of this passage is（）.AAgriculture and IndustryBExportCProduction
单选题The main bearings are provided with thin-walled （）, lined with a copper-lead alloy.Asteel guidesBsteel shellsCsteel bearing capsDpig iron