Air cargo is （）A、air transport B、air freight C、air delivery D、plane

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

When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should ______.

A.secure all ventilation

B.shut down the exhaust blowers

C.shut down the intake blowers

D.ventilate the cargo holds

Usually, emergency electricity supplies to_______on board

A.Cargo winch

B.Windlass

C.Steering gear

D.Main air compressor

A person may operate an air compressor in which of the following areas on board a tank barge ________．

A.Pumproom

B.Generator room

C.A space adjacent to a cargo tank

D.A space two meters from a cargo valve

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

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

Which variable factor affects the initial lashing requirements aboard Ro-Ro vessels?

A.Age of vehicle or cargo unit

B.Size and weight of vehicle/cargo unit

C.Reputation of shipper concerning condition of cargo

D.Air pressure in the vehicles tires

The area where the air carrier holds the accepted cargo is also restricted area.

此题为判断题(对，错)。

The moisture equilibrium chart can be used to determine the ______．

A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium exists

B.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodity

C.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargo

D.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo