0n a vesel proceeding from a very cold to a warm climate wit

Steam smoke will occur when ______.

A.extremely cold air from shore passes over warmer water

B.warm dry air from shore passes over cooler water

C.cold ocean water evaporates into warm air

D.cool rain passes through a warm air mass

On a vessel proceeding from a very cold to a warm climate with a cargo of a nonhygroscopic nature in the holds，which is TRUE ________．

A.Danger of heavy ship sweat exists；constant and vigorous ventilation is required

B.There is danger of heavy cargo sweat if outside air is introduced by ventilation

C.There is little danger of ship's sweat，slight possibility of cargo sweat；moderate ventilation is needed

D.The possibility of any sweat problem，either cargo or ship，is remote

Countries around the Equator have the()climate.

A、sub-tropical

B、hot

C、tropical

D、cold

______ LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W．

A.SHLW

B.SCTD

C.OBS

D.SW

Hygroscopic cargoes should be ventilated when ______.

A.going from a warm to a cold climate

B.the dew point of the outside air is greater than the dew point of the air in the hold

C.the dew point of the air in the hold is very low

D.the outside dew point is 16°C and the cargo temperature is 12°C

Your vessel is loaded with nonhygroscopic cargoes and is going from a cold to a warm climate．You should ______．

A.Start the exhaust blowers

B.Start the intake blowers

C.Not ventilate the cargo holds

D.Ventilate the cargo holds

The cold and dry climate of Antarctica ______ it one of the toughest places on Earth to live.

A、produces

B、manufactures

C、does

D、makes

Cyclones tend to move ______.

A.perpendicular to the isobars in their warm sectors

B.parallel to the isobars in their warm sectors

C.parallel to the line of the cold front

D.perpendicular to the line of the cold front