更多"Seasickness is caused by rolling or"的相关试题:
[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]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]Heave is motion along the（）.
A. longitudinal axis
B. transverse axis
C. vertical axis
D. centerline axis
[单项选择]MIST is 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]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]The rotary motion of a diesel engine crankshaft is obtained from the up and down motion of the piston via the （）.
A. camshaft
B. reduction gears
C. rocker arm
D. connecting or piston rod
[单项选择]When the wave period and the apparent rolling period are the same（）.
A. synchronous rolling occurs
B. roll period decreases
C. roll period increases
D. roll amplitude is dampened
[单项选择]Chemical burns are caused by the skin coming in contact with（）.
A. acids or alkalies
B. diesel oil
C. acids, but not alkalies
D. alkalies, but not acids
[单项选择]Floating, caused by winds and current with a determinable direction defines（）.
A. floating
B. sailing
C. drifting
D. running into danger
[单项选择]Black smoke coming from a boiler can be caused by （）.
A. low water level
B. low oil pressure
C. excessively high fuel pressure
D. an improper air/fuel ratio
[单项选择]FLOATING，CAUSED BY WINDS AND CURRENT WITH A DETERMINABLE DIRECTION defines（）.
A. Floating
B. Sailing
C. Drifting
D. Running into danger
[单项选择]Air circulation is caused or affected by（）.
A. the rotation of the earth on its axis
B. convection currents caused by differences in radiant heating between equatorial and polar regions
C. mountain ranges
D. All of the above
[单项选择]Advection fog is most commonly caused by（）.
A. air being warmed above the dew point
B. saturation of cold air by rain
C. a rapid cooling of the air near the surface of the Earth at night
D. warm moist air being blown over a colder surface
[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]In observing rig motion while under tow，the period of roll is the time difference between（）.
A. zero inclination to full inclination on one side
B. full inclination on one side to full inclination on the other side
C. full inclination on one side to the next full inclination on the same side
D. zero inclination to the next zero inclination
[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
