Air temperature varies with ______.
A.the altitude above sea level
B.the season of the year
C.the latitude or distance from the equator
D.All of the above
第1题：
If the jacket water temperature rises rapidly above normal in a diesel engine, you should first
A.place standby cooler in operation
B.reduce engine load
C.check thermostatic valve
D.clean sea water strainer
第2题：
The error in the measurement of the altitude of a celestial body，caused by refraction，increases as the ______.
A.horizontal parallax decreases
B.observer's height above sea level increases
C.humidity of the atmosphere decreases
D.altitude of the body decreases
第3题：
Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?
A.Cooling the air to a temperature just above dew point
B.Heating the air to a point at which moisture will boil off ,then re-cooling it
C.Cooling the air to a point below dew point, then reheating it
D.Heating the air and then cooling it to a point below dew point
第4题：
a boat bucket
an air tank filled with water
an oar and canvas weighted down
All of the above
第5题：
Should the steel be loaded in conditions where the ambient temperature is lower than might be encountered later on in the voyage，______．
A.the hold should be ventilated
B.the hold should not be ventilated
C.the hold should be half-ventilated
D.hot air should be introduced into the hold
第6题：
Sweat damage will occur in a cargo hold containing machinery parts when ______.
A.the outside air is colder than the cargo．
B.the air temperature of the hold is higher than the outside air temperature．
C.the dew point of the hold is higher than the temperature of the cargo．
D.the dew point of the outside air is lower than the temperature of the cargo
第7题：
Sweat damage in a hatch full of canned goods in cartons will occur when the ______．
A.Air temperature is higher than the temperature of the cargo
B.Air temperature is lower than the temperature of the cargo
C.Dew point is higher than the temperature of the cargo
D.Dew point is lower than the temperature of the cargo
第8题：
第9题：
______ is a type of fog occurring close to the sea surface when the air is dry and cold-probably at least 9℃ below the sea surface temperature．
A.MIXING FOG
B.ADVECTION FOG
C.RADIATION FOG
D.ARCTIC SEA SMOKE
第10题：
the altitude above sea level
the season of the year
the latitude or distance from the equator
All of the above