Radiation fog is more commonly encount

1、Advection fog is most commonly caused

Advection fog is most commonly caused by（）.Aair being warmed above the dew pointBsaturation of cold air by rainCa rapid cooling of the air near the surface of the Earth at nightDwarm moist air being blown over a colder surface

2、Fog is likely to occur when there is l

Fog is likely to occur when there is little difference between the dew point and the（）.Arelative humidityBair temperatureCbarometric pressureDabsolute humidity

3、The fog most commonly encountered at s

The fog most commonly encountered at sea is called（）.Aconduction fogBradiation fogCfrontal fogDadvection fog

4、What is TRUE when operating in fog and

What is TRUE when operating in fog and other vessels are detected by radar?（）.AYou should make an ample change to port for a vessel crossin...

5、A 200-meter vessel is aground in fog.

A 200-meter vessel is aground in fog. Which signal is optional? （）AA bell signalBA gong signalCA whistle signalDAll of the above

6、The fog is lifted，so（）the radar．

The fog is lifted，so（）the radar．AcloseBopenCswitch offDswitch o