Aphelion is the point where the Sun（）.

单项选择题Aphelion is the point where the Sun（）.

A.and Moon and Earth form a right angle
B.and Moon and Earth are in line
C.crosses the celestial equator
D.is farthest from the Earth

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1.单项选择题Any firefighting equipment that is carried in addition to the minimum required number on a ship must（）.

A.meet the applicable standards
B.be marked as additional equipment
C.be stowed in a separate area
D.All of the above

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2.单项选择题Any extinguishing agent used on a Class “C” fire must have which important property? （）

A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity

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3.单项选择题Antares is found in what constellation?（）

A.Scorpio
B.Corvus
C.Libra
D.Corona Borealis

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4.单项选择题An undocumented vessel with 10 people aboard and operating 25 miles off the seacoast must carry a survival craft of the（）.

A.inflatable buoyant apparatus type
B.buoyant apparatus type
C.life float type
D.Any of the above types are acceptable

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5.单项选择题An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?（）

A.Masthead lights and sidelights
B.One sidelight，the masthead lights and stern light
C.Both sidelights
D.Stern light

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6.单项选择题An oiler was badly burned and you are communicating with a passenger ship that has a doctor and hospital on board. You want to rendezvous in a certain position so the oiler can be evacuated for medical treatment. Which code should your message contain?（）

A.MAF
B.MAB
C.MAA
D.MAE

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7.单项选择题An isotherm is（）.

A.a line on a weather map connecting equal points of both temperature and pressure
B.an instrument that measures the climatological effects of temperature
C.a line connecting points of equal barometric pressure on a weather map
D.a line connecting points of equal temperature on a weather map

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8.单项选择题An intermediate spring is（）.

A.fitted in each leg of the towing bridle
B.generally located between the "fishplate" and the main towing hawser
C.secured at the "H" bitts
D.usually made of manila hawser

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9.单项选择题An instrument that maintains a continuous record of humidity changes is called a（）.

A.thermometer
B.barometer
C.hygrograph
D.thermograph

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10.单项选择题An instrument that indicates wind direction is known as a(n)（）.

A.weather vane，wind vane or wind sock
B.hydrometer
C.hygrometer
D.sling psychrometer

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