更多"The guide shoes are secured to the "的相关试题:
[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]The connecting rob is fitted between the crosshead and the crankshaftIt transmits the firing force, and together with the crankshaft convert 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]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]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]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]You have a secured Windows Communication Foundation (WCF) service. You need to track unsuccessful attempts to access the service. What should you do?（）
A. Set the authorization Manager Type attribute of the service Authorization behavior to Message.
B. Set the include Exception Detailsln Faults attribute of the service Debug behavior to true.
C. Set the Mode attribute of the security configuration element to Message.
D. Set the message Authentication AuditLevel attribute of the service Security Audit behavior to Failure.
[单项选择]Anchors are prevent from running out when secured by the（）.
A. brake
B. devil's claw
C. pawls
D. All of the above
[单项选择]Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?（）
A. Electric power and starting air
B. Lube oil standby pump and control air
C. Hydraulic switch and engage jacking gear
D. Motor drain and pneumatic control system power
[单项选择]The cylinder covers are secured by eight elastic holding down arranged in four pairs（）
A. nuts
B. screws
C. studs
D. flanges
[单项选择]The bed-plate is secured in the longitudinal direction by means of bolts known as （）.
A. end-chock bolts
B. side-chock bolts
C. through bolts
D. tie rods
