更多"MIST is caused by（）."的相关试题:
[单项选择]The oil mist detectors continuously（） the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity measuring track.
A. detract
B. extract
C. pump up
D. pump down
[单项选择]In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.
A. supply clean air to the measuring compartment of the units for more accuracy
B. generaate the pressure required for the extraction of the oil mist from the
C. generate the pressure required for the extraction of the oil mist from the crankcase
D. supply clean air to the measuring track of the units for more accuracy
[单项选择]In general, the oil mist detectors include a built-in heating unit and a compact plug for electrical connectionThe function of heating unit is to （）
A. avoid false alarms as a result of condensing water vapor
B. avoid danger of frost under very cold weather
C. reduce the viscosity of the crankcase atmosphere in order to improve the fluidity
D. keep the temperature of the oil mist detectors in an appropriate range
[单项选择]Oil mist detectors are usually used on board to detect oil mist density within （）.
A. the engine crankcase
B. the engine scavenge boxes
C. drain tanks
D. fuel tanks
[单项选择]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.
A. fuel oil vapor at the sludge tank vent
B. unburned fuel vapors in the scavenge air receiver
C. lube oil vapors in the crank case
D. lube oil vapors in the engine room
[单项选择]The purpose of an oil mist detector in a main propulsion diesel engine is to warn of （）
A. excessive mist density in the crankcases
B. excessively high crankcase vacuum
C. excessively high bearing temperature
D. excessive carbon buildup in the lube oil
[单项选择]Hydraulic machinery failures are commonly caused by misalignment of the system components and by （）.
A. hydraulic fluid contamination
B. excessive fluid friction
C. turbulent fluid flow
D. fluid pressure surges
[单项选择]Disastrous explosions have been caused by accumulations of oil or oil vapour in air lines not drainedAccording to the above sentence, which of the following statements is true?（）
A. Oil vapour in air piping are dangerous
B. Explosion will cause oil vapouring in air lines
C. Oil vapour in air piping should be drained
D. Oil in air piping should not be drained
[单项选择]Deviation is caused by（）.
A. changes in the earth's magnetic field
B. nearby magnetic land masses or mineral deposits
C. magnetic influence inherent to that particular vessel
D. the magnetic lines of force not coinciding with the lines of longitude
[单项选择]Haze is not caused by（）.
A. forest fires
B. smoke from industrial areas
C. dust or sand storms
D. water droplets with the relative humidity more than 95%
[单项选择]Seasickness is caused by rolling or rocking motions which affect fluids in the（）.
A. stomach
B. lower intestines
C. inner ear
D. bladder
[单项选择]Permanent magnetism is caused by（）.
A. operation of electrical equipment and generators on board ship
B. the earth's magnetic field affecting the ship's hard iron during construction
C. the horizontal component of the earth's magnetic field acting on the horizontal soft iron
D. the vertical component of the earth's magnetic field acting on the vertical soft iron
[单项选择]Noise in a refrigeration compressor can be caused by （）.
A. worn bearings and piston pins
B. slugging due to flooding back
C. too much oil in circulation
D. All of the above
[单项选择]Exhaust valve grooving and corrosion is caused by certain components of residual fuel oilThese components are sodium, sulfur, and （）.
A. vanadium
B. carbon
C. copper
D. ash
[单项选择]
Continuous surging of turbocharger can be caused by（）
①crash stop of engine
②increased back pressure after T-Ch
③fouled or damaged turbine nozzle ring
A. all are correct
B. ②and③are correct
C. none of the above is correct
D. ①only is correct
[单项选择]Compass deviation is caused by（）.
A. magnetism from the earth's magnetic field
B. misalignment of the compass
C. magnetism within the vessel
D. a dirty compass housing
[单项选择]Forces within a drilling unit have caused a difference between the starboard and port drafts. This difference is（）.
A. list
B. heel
C. trim
D. flotation
