The bearing shell generally has （） for location and oil grooves round the center of its axial length.

相似题目

• The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of （） of different thickness.

  A . shims B . packing C . glands D . washer

  查看最佳答案

• The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.

  A . acids B . additives C . heat D . gear

  查看最佳答案

• The bearings used to support the crankshaft are generally called （）

  A . line shaft bearings B . connecting rod beatings C . main bearings D . support bearing

  查看最佳答案

• The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives themThe difference is termed （）.

  A . nip B . nap C . gap D . li

  查看最佳答案

• The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by （）.

  A . a separate air ejector unit B . a direct unimpeded connection between second stage and salt water feed heater C . either by vacuum drag or an external line from the first stage via a fixed orifice D . the fixed orifice provided in the steam supply line

  查看最佳答案

• While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface you would, therefore, suspect that （）

  A . the bearing had been overheated B . water was present in the oil C . the lube oil was not being properly filtered D . the maximum allowable bearing pressure had been exceeded

  查看最佳答案

• The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）

  A . main bearing shells B . main bearing C . steel D . bearing metal

  查看最佳答案

• The main bearing metal is a lining （）.

  A . inside the bearing B . outside the bearing C . covering the crankshaft D . none of the above

  查看最佳答案

• Which of the listed bearing types is an example of a solid bearing?（）

  A . Piston wrist pin bushing B . turbine bearing C . Spring bearing D . Diesel engine main bearing

  查看最佳答案

• The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the （） through which oil is transmitted up the rod to lubricate the small end.

  A . connecting rod B . piston rod C . bearing housing D . none of the above

  查看最佳答案

• What is the function of the thrust bearing?（）

  A . Prevents lateral movement of the slow speed gear B . Transmits propeller thrust to the hull C . Keeps spring bearings in line D . Prevents main reduction gear axial movement

  查看最佳答案

• （） clearances in the main or crank pin bearings will sometimes be indicated by loss of pressure in the lubricating system before any bearing knock is heard.

  A . Too larger B . Too smaller C . Excess D . Excessive

  查看最佳答案

• Doors are generally formed in the （） of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.

  A . bedplates B . columns C . cylinder blocks D . safety ca

  查看最佳答案

• A main bearing consists of two shells which are secured by means of studs and （）.

  A . tie rods B . through bolts C . lead wires D . bearing ca

  查看最佳答案

• The ship’s bearing is 145°（）the Lighthouse.

  A . in B . on C . for D . from

  查看最佳答案

• Precision engine bearing inserts are manufactured with a small portion of the bearing ends extending beyond the bearing housing or capsThe installation process of these bearings requires sufficient （）.

  A . overlap B . crush C . lap or lead D . protrusio

  查看最佳答案

• The external circumference of a pair of main bearing shells is slightly （） that of the bore of the housing which receives them Whats the meaning of “that” in the sentence above？

  A . less than B . lighter than C . larger than D . smaller tha

  查看最佳答案

• In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs（）

  A . smaller, higher B . higher, smaller C . smaller, smaller D . higher, higher

  查看最佳答案

• The bearing shells depend on the accuracy of （） to held them in a truly circular shape.

  A . the gap B . the clearance C . the bore D . the housing

  查看最佳答案

• The Story of the Three Bears was written by ____.

  查看最佳答案

• How is the future of polar bears?

  查看最佳答案

• What is the main reason of the reduction of the grizzly bears' number？

  A．Lacking food. B．Forest deceasing. C．The coyote existing. D．Not clear yet.

  查看最佳答案

• The pumps press oil into the cross-head bearing gap when the load on the shell is at its lowestWhat is the meaning of “its” in the sentence above？

  A.the cross-head B.the pumps C.the shell D.the load

  查看最佳答案

• After riveting is completed, the joints on the shell of a vessel are generally made watertight by________.

  A.faying B.caulking C.felt or canvas packing D.red lead

  查看最佳答案