單項選擇題While steaming slowly in the harbor，no ship is （） to exceed the speed limited．

A.assumed
B.appreciated
C.promised
D.permitted


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1.單項選擇題In Admiralty Sailing Directions，bands is the word used to indicate（）marking．

A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal

3.單項選擇題The period at high or low tide during which there is no change in the height of the water is called the （）.

A.range of the tide
B.plane of the tide
C.stand of the tide
D.reversing of the tide

4.單項選擇題A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.

A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown

5.單項選擇題During a period of whiteout，you should expect which of the following（）.

A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects

6.單項選擇題The Earth’s irregular heating is caused by （）.

A.the time of day
B.the seasons
C.geography
D.All of the above

7.單項選擇題The distance between any two meridians measured along a parallel of latitude and expressed in miles is the （）.

A.difference in longitude
B.mid-longitude
C.departure
D.meridian angle

9.單項選擇題An occulting light is one in which （）.

A.the period of darkness exceeds the period of light
B.there is only a partial eclipse of the light
C.the periods of light and darkness are equal
D.the period of light exceeds the period of darkness

10.單項選擇題A pilot vessel on pilotage duty shall show identity lights （）.

A.at any time while underway
B.while at anchor
C.while alongside a vessel
D.All of the above