更多"The piston rings if found worn out "的相关试题:
[单项选择]What is the function of wearing rings found on some centrifugal pumps? （）
A. Absorb erosion of high velocity discharge stream
B. Seal pump shaft against entry of air
C. Isolate the outlet side from the inlet side
D. Dampen the turbulent discharge flow
[单项选择]Worn out ring grooves should be （） to standard dimension after being welded.
A. machined
B. bored
C. honed
D. drilled
[单项选择]These piston rings are so badly worn that they must be （）.
A. renewed
B. welded
C. machined
D. chromium-plated
[单项选择]The winch is liable（）worn-out in this way.
A. getting
B. to get
C. to have got
D. for getting
[单项选择]A number of bags are worn-out（）a certain extent.
A. at
B. in
C. on
D. to
[单项选择]The worn-out bags are all second-hand ones（）stated in the Shipping Order.
A. so
B. as
C. that
D. like
[单项选择]Worn main bearing will cause the compression ratio of an auxiliary diesel engine to（）
A. increase
B. decrease
C. remain the same
D. increase on compression decrease on expansion
[单项选择]Protective clothing must be worn while sampling hazardous cargo on a tanker，and as a minimum includes（）.
A. a hood or hard hat
B. a face mask or goggles
C. boots
D. chemical resistant gloves
[单项选择]Worn diesel engine intake valve guides can result in （）
A. increased engine breathing efficiency
B. excessive valve lash
C. excessive lube oil consumption
D. lower than normal fuel consumption
[单项选择]Broken piston rings manifest themselves during the scavenge port inspection by（）
A. Lack of elastic tension, when the rings are pressed into the groove by means of a stick
B. Blackish appearance
C. Fractured rings and missing rings
D. all off the above
[单项选择]Safety goggles or glasses are NOT normally worn when（）.
A. using a rotary grinder with an installed shield
B. letting go the anchor
C. handling wire rope or natural fiber line
D. painting with a spray gun
[单项选择]Excessively worn, or polished ends on a diesel engine valve spring, indicate（）
A. burned exhaust valves
B. excessive spring compression
C. spring surge
D. worn valve seats
[单项选择]Worn main bearings in a diesel engine can result in （）
A. decreased compression pressure
B. increased lube oil pressure
C. lower lube oil temperature
D. excessive leakage past the piston rings
[单项选择]The piston rings are manufactured with a diameter （） the bore of the cylinder.
A. larger than
B. smaller than
C. equal to
D. none of the above
[单项选择]Improperly fitted piston rings in a diesel engine can cause（）
A. excessive lube oil consumption
B. lower than normal lube oil temperature
C. higher than normal exhaust back pressure
D. excessive crankshaft end play
