更多"Mariners are warned that fog signal"的相关试题:
[单项选择]After the engine is warned, we should（） the turning gear before starting up the engine.
A. take in
B. put in
C. take out
D. put up
[单项选择]The ship should reduce speed in the thick fog because of（）.
A. the poor visibility
B. the fog signals
C. the fast speed
D. the good sight
[单项选择]When your vessel enters thick fog，she should sound（）every two minutes in accordance with these Rules.
A. one short blast
B. one prolonged blast
C. two short blasts
D. three short blasts
[单项选择]When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.
A. one short blast
B. one prolonged blast
C. two short blasts
[单项选择]Which kind of fog is also named as ground fog?（）
A. Advection
B. Radiation fog
C. frontal fog
D. Steam fog
[单项选择]Radiation fog（）.
A. always forms over water
B. is formed by a temperature inversion
C. is thinnest at the surface
D. dissipates during the evening
[单项选择]High-velocity fog（）.
A. is a finer，more diffuse water spray than low-velocity fog
B. requires that the water pressure be no greater than 60 psi
C. produces an effective fog pattern no more than 6 feet beyond the nozzle
D. extinguishes a fire by absorbing heat and reducing the supply of oxygen
[单项选择]Fog forms when the air（）.
A. Is 50% water saturated
B. Is 90% water saturated
C. Temperature is greater than the dew point temperature
D. Temperature is equal to，or below the dew point temperature
[单项选择]Which instrument is most useful in forecasting fog（）.
A. A barometer
B. An anemometer
C. A sling psychrometer
D. A pyrometer
[单项选择]Advection fog holds longest over which portions of the lakes?（）
A. Northwest
B. Southeast
C. Northeast
D. Southwest
[单项选择]Vessels are warned（）in this area.
A. to not anchor
B. to anchor not
C. not to anchor
D. not anchor to
[单项选择]Mariners are FIRST warned of serious defects or important changes to aids to navigation by means of（）.
A. marine broadcast Notice to Mariners
B. Weekly Notices to Mariners
C. corrected editions of charts
D. Light Lists
[单项选择]Uncharted lights, fog signals and radar beacon transmissions may be（）near the station.
A. encountered
B. met
C. contacted
D. seen
[单项选择]All fog signals shall be sounded every two minutes with the exception of a vessel（）.
A. underway or making way
B. under sail or under tow
C. anchored or aground
D. not under command or restricted in her ability to maneuver
[单项选择]A fog signal consisting of one prolonged blast followed by four short blasts would indicate thepresence of a（）.
A. vessel being towed
B. fishing vessel engaged in trawling
C. vessel at anchor warning of her location
D. power-driven pilot vessel on station underway
[单项选择]The fog most commonly encountered at sea is called（）.
A. conduction fog
B. radiation fog
C. frontal fog
D. advection fog
