單項選擇題Chart legends printed in capital letters show that the associated landmark is（）.

A.inconspicuous 
B.conspicuous
C.a government facility or station
D.a radio transmitter


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1.單項選擇題Channel 13 is primarily used for ship to ship communication. Channel 13 is also authorized for（）.

A.coast to aircraft operational communications
B.aircraft to ship operational communications
C.lock & bridge communications
D.aircraft to ship navigational communications

2.單項選擇題Changing rescuers while carrying out artificial respiration should be done（）.

A.without losing the rhythm of respiration
B.only with the help of two other people
C.by not stopping the respiration for more than 5 minutes
D.at ten minute intervals

3.單項選擇題Carbon dioxide as a fire fighting agent has which advantage over other agents?（）

A.It causes minimal damage
B.It is safer for personnel
C.It is cheaper
D.It is most effective on a per unit basis

4.單項選擇題Camphor oil is classified as a（）.

A.Grade A flammable liquid
B.Grade C flammable liquid
C.Grade D combustible liquid
D.Grade E combustible liquid

5.單項選擇題By regulation，you MUST keep a record of the use of your radiotelephone for a minimum of（）.

A.six months
B.one year
C.two years
D.thirty months