單項(xiàng)選擇題As the temperature of the air reaches the dew point，（）.

A.rain must develop
B.fog may form
C.it begins to snow
D.water freezes


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1.單項(xiàng)選擇題As the temperature of an air mass decreases，the（）.

A.absolute humidity decreases
B.relative humidity increases
C.specific humidity decreases
D.dew point rises

2.單項(xiàng)選擇題As the South Equatorial Current approaches the east coast of Africa，it divides with the main part flowing south to form the warm（）.

A.Agulhas Current
B.Canary Current
C.Benguela Current
D.Madagascar Current

3.單項(xiàng)選擇題As seen from the tow，what should connect the leading ends of both towing bridle legs to the main towing hawser?（）

A.A cable clamp
B.A fishplate，flounder，or towing plate
C.A pad eye
D.The towing bitts

4.單項(xiàng)選擇題As it approaches，a typical warm front will bring（）.

A.rising temperatures and falling barometric pressure
B.falling temperature and pressure
C.falling temperatures and rising pressure
D.rising barometric pressure and temperatures

5.單項(xiàng)選擇題As defined in the regulations governing marine casualties a “marine employer” may be the（）.

A.owner
B.agent
C.Master
D.All of the above