更多"“Any leaks in piping, propeller sha"的相关试题:
[单项选择]The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to （）.
A. avoid unnecessary pints inventory
B. keep torsional vibration constant
C. use existing supports and braces
D. maintain specified injection characteristics
[单项选择]Flames from small leaks of LFG may be extinguished by（）.
A. utilizing carbon dioxide or dry chemical fire extinguishers
B. utilizing soda and acid fire extinguishers
C. blowing the flames out
D. letting it burn itself out
[单项选择]Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.
A. sealing clamps
B. repair tape
C. a tube patch
D. sail twine and vulcanizing kit
[单项选择]Tube leaks in the distillate cooler of a two stage flash evaporator will result in （）.
A. loss of second stage vacuum
B. contamination of the distillate
C. lower feed inlet temperature
D. contamination of the second stage condenser
[单项选择]In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause （）.
A. molecular fluid vibration
B. energy losses
C. wide pressure variations
D. mechanical damage to control valves
[单项选择]Small hull leaks can be temporarily repaired by（）.
A. parcelling
B. parbuckling
C. caulking
D. seizing
[单项选择]In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system , there must be（）.
A. fuel
B. oxygen
C. ignition
D. All of the above
[单项选择]The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a （）.
A. cargo fill
B. line drop
C. transfer
D. branch line
[单项选择]Fixed piping leads from the（）to various areas of the compartment to be flooded.
A. manifold
B. remote pull box
C. discharge nozzle
D. machinery space
[单项选择]In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
A. Globe valve
B. Butterfly valve
C. Gate valve
D. Packless valve
[单项选择]In the piping systems of a vessel , what type of valve gives the least resistance to fluid flow when fully open?（）.
A. Globe valve
B. Butterfly valve
C. Gate valve
D. Packless valve
[单项选择]If no gaskets are used in the piping joints of a Freon system, the joints must be（）
A. finished joints
B. welded joints
C. ground joints
D. soldered joints
[单项选择]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.
A. inside micrometer
B. feeler gauge
C. adjustable trammel
D. sighting device
[单项选择]The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）.
A. wheel
B. crankshaft
C. running gear
D. cam
[单项选择]Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by （）.
A. a compressed packing gland
B. lantern tings between the packing rings
C. a liquid seal
D. the stuffing box gland
[单项选择]Shaft sealing in a centrifugal pump can be effected by （）.
A. the mechanical seal
B. packed stuffing boxes
C. either A or B
D. neither A nor B
