更多"The connecting rob is fitted betwee"的相关试题:
[单项选择]The connecting rod is fitted between the crosshead and the crankshaftI t transmits the firing force, and together with the crankshaft converts the （）motion to a （）motion.
A. rotary；reciprocating
B. up and down；fore and aft
C. fore and aft；up and down
D. up and down；rotary
[单项选择]Large pipes or down-comers are fitted between the steam drum and （） to ensure good natural circulation of water.
A. fire-tubes
B. furnaces
C. water drums
D. water wall tubes
[单项选择]Large pipes or （） are fitted between the steam and water drums to ensure good natural circulation of water.
A. fire-tubes
B. furnaces
C. down-comers
D. soot-blowers
[单项选择]Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
A. cylinder liners and piston rings
B. main bearings
C. crankpin bearings
D. turboblower
[单项选择]Large crosshead type engine generally has two lubrication systems, a function performed only by cylinder oil system is（）
A. lubricating
B. cooling
C. sealing
D. cleaning
[单项选择]Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.
A. telescopic pipe
B. large bore pipe
C. generating pipe
D. central pipe
[单项选择]Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）
A. Ensure proper cylinder lube oil flow
B. Open all air space drain cocks
C. Open all indicator valves
D. all of the above
[单项选择]The guide shoes are secured to the crosshead by means of（）
A. through bolts
B. end chock bolts
C. side chock bolts
D. tap-bolts
[单项选择]Today, crankshafts for large 2-stroke crosshead engines are of the （）type.
A. semi-built
B. built-up
C. solid forged
D. individual forged
[单项选择]The A-frames carry the crosshead guides and support the engine （）.
A. foundation
B. seating
C. entablature
D. bedplate
[单项选择]In diesel engines designed with a crosshead, the motion of the piston rod can be described as （）.
A. reciprocating at the piston pin, rotary at the crank pin
B. reciprocating at the crank pin, rotary at the piston pin
C. straight reciprocation
D. straight rotation
[单项选择]The slippers run （） in the crosshead guides as the piston and rod are （）and prevent the top of the connecting rod from moving sideways.
A. up and down；reciprocating
B. up and down；rotating
C. back and forth；reciprocating
D. back and forth；rotating
[单项选择]The position of （） on the crosshead on a large diesel engine is determined by dowel pins.
A. the guideway
B. the piston rod
C. the crosshead shoes
D. the interlocked circlip
[单项选择]A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）
A. low TBN value
B. high alkaline reserve
C. low flash point
D. high pour point
[单项选择]The load on the crosshead pin is always （）, so it is the （）half of the bearing which is subject to wear.
A. upwards；top
B. upwards；bottom
C. downwards；top
D. downwards；bottom
[单项选择]Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A. jam in the most worn part of the cylinder when the rings expand
B. break in the most worn part of the cylinder when the rings expand
C. wear eccentrically on the side opposite the end gap
D. overheat and jam at the top center on the combustion stroke
[单项选择]Preventer bars are fitted on lifeboat releasing hooks to prevent（）.
A. the falls from unhooking if the releasing gear is operated accidentally while the boat is being lowered
B. operation of the release lever until the boat is waterborne
C. the falls from rehooking after they have been released
D. accidental unhooking when the falls become slack
[单项选择]Safety shackles are fitted with（）.
A. a threaded bolt
B. a round pin，with a cotter pin
C. a threaded bolt，locknuts，and cotter pins
D. round pins and locknuts
