更多"The ports are drilled in the liners"的相关试题:
[单项选择]All lighterage in or off ports of loading or ports of discharge shall be for the account of （）.
A. the carrier
B. the merchant
C. the owner
D. the shipper
[单项选择]Passages are drilled in the crankshafts of diesel engines to provide lubricating oil to the （）.
A. main bearings
B. connecting rod bearings
C. piston pin bushings
D. All of the above
[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]Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between （）.
A. crown and skirt
B. liner and jacket
C. ring and groove
D. jacket and block
[单项选择]A drilled hole is accurately finished to size with a （）
A. center drill
B. finish drill
C. broach
D. reamer
[单项选择]The fluke angle of an anchor system is the angle between the（）.
A. flukes and the shank
B. shank and the sea bottom
C. mooring line and the sea bottom
D. flukes and the shackle
[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 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]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]Deep-sea liners are（）.
A. ferries
B. passenger liners
C. cruise ships
D. ocean going vessels
[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 information regarding ports such as buoyed channels,fairway,location and number of terminals,river channels,details of navigational marks,location of overhead bridges, underground cables etc. are shown in（）
A. small-scale charts
B. medium-scale charts
C. large-scale charts
D. natural scale charts
[单项选择]Clogged or partially obstructed exhaust ports on a diesel engine can cause（）
A. over-speeding of the engine
B. failure of the engine to shut down
C. no effect of engine mounting bolts
D. high exhaust temperatures
[单项选择]Directional intake ports in diesel engines are used to （）.
A. reduce air charge turbulence
B. induce air swirl
C. deflect hot combustion gas away from the valves
D. oppose the effects of piston induced squish
[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
