更多"Cylinder liners from older lower po"的相关试题:
[单项选择]Crankshafts of medium speed engines are （） from a single piece of steel.
A. unusually solid welded
B. never be solid forged
C. almost invariably solid forged
D. almost invariably be welded
[单项选择]Vee-type engines have the connecting rods from two cylinders connected to each （） of the crankshaft.
A. throw
B. web
C. main bearing
D. deflection
[单项选择]（）is taken from the lower most point of the keel to the summer loadline.
A. Extreme draft
B. Molded draft
C. Extreme depth
D. Molded depth
[单项选择]Deep-sea liners are（）.
A. ferries
B. passenger liners
C. cruise ships
D. ocean going vessels
[单项选择]Which of the diesel engine cylinder liners listed has internal cooling water passages?（）
A. Internally finned liner
B. Externally finned liner
C. Wet liner
D. Integral water-jacket liner
[单项选择]Why are some diesel engine cylinder liners plated on the wearing surface with porous chromium?（）
A. The chromium will not wear out the piston rings
B. The chromium strengthens the liners in the way of the scavenging air ports
C. Chromium eliminates the need for oil scraper rings
D. Pores in the plating aid in maintaining the lube oil film
[单项选择]The cylinder covers and the liners are bolted together by means of （）.
A. bolts welded into the cylinder head
B. bolts welded into the cylinder frames
C. studs screwed into the cylinder head
D. studs screwed into the cylinder frames
[单项选择]The use of liners in riveted construction is eliminated by using（）.
A. lapped construction
B. strapped construction
C. joggled construction
D. belted construction
[单项选择]The withdrawing of the cylinder liners, in general, depends on their （）.This may amount to approximately 1/120 of the diameter in some engines.
A. correct maneuvering
B. wear
C. working efficiency
D. maintenance
[单项选择]Main engines as well as auxiliary engines operating on heavy fuel should have continuous on the lubricating oil, either according to the bypass or batch principles（）
A. filtering
B. centrifuging
C. depositing
D. operating
[单项选择]One advantage of dry cylinder liners used in a diesel engine is the（）
A. lower thermal expansion rates than wet liners
B. greater heat transfer rate than wet liners
C. greater wear resistance than wet liners
D. procedure to replace dry liners is simpler than for wet liners
[单项选择]A number of cylinder liners are enclosed in one cast iron casing to form a （）.
A. cylinder cover
B. cylinder block
C. cylinder frame
D. bed-plate
[单项选择]The cylinder liners are made of （） and the cylinder surfaces are sometimes chromium-plated.
A. steel
B. copper
C. cast iron
D. stainless steel
[单项选择]The ports are drilled in the liners at an angle of approx 20℃ the result being that （） is given a rotary movement.
A. the scavenging air
B. the exhaust gases
C. the mixed air
D. the spray oil
[单项选择]Advise you（）engines．
A. stop
B. to stop
C. stopping
D. stopped
[单项选择]Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）
A. camshaft beatings
B. main bearings
C. piston crowns
D. cylinder walls
