單項選擇題A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.

A.azimuthal gnomonic projection
B.Lambert conformal projection
C.transverse Mercator projection
D.polyconic projection


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1.單項選擇題A chart position enclosed by a square is a(n)（）.

A.fix
B.estimated position
C.dead reckoning position
D.running fix

2.單項選擇題A change of a documented vessel’s name can only be made by the（）.

A.American Bureau of Shipping
B.Commissioner of Customs
C.Treasury Department
D.Coast Guard

3.單項選擇題A chain bridle is used when towing astern because it（）.

A.is easy to connect
B.provides an effective catenary and absorbs shock due to its weight
C.makes rigging a swivel unnecessary
D.prevents the tow from yawing by the drag of the chains in a seaway

4.單項選擇題A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.

A.is more flexible and has the ability to absorb shock because of its weight
B.is less subject to wear and damage from abrasion
C.requires little maintenance
D.All of the above

5.單項選擇題A celestial body’s complete orbit around another body is（）.

A.a rotation
B.a revolution
C.space motion
D.nutation