A.large cumulonimbus (thunderclouds) building up
B.high cirrus clouds gradually changing to cirrostratus and then to altostratus
C.fog caused by the warm air passing over the cooler water
D.low dark clouds accompanied by intermittent rain
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A.very quick flashing
B.flashing
C.fixed
D.occulting
A.pressure changes in the air mass
B.movement of the air mass
C.the heterogeneous nature of the air mass
D.upper level atmospheric changes
A.which
B.where
C.what
D.who
A.specified by international authorities
B.specified by national authorities
C.on standard map
D.on the chart or Sailing Directions in use
A.equipped
B.rigged
C.put on
D.put off
最新試題
The step of a pilot ladder which prevents the ladder from twisting is the （）.
Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）
When a tug is pulling on a hawser at right angles to the ship，and the pilot wants to come ahead or astern on the ship’s engine，care must be taken that the pilot（）.
When a pilot is on board to pilot the vessel the Letter （） must be hoisted．
Please wireless to let me know （） I am to anchor or to meet pilot．
Is the pilot boat （） station
The transfer procedures for oil products are required to be posted （）.
When the movement of engine is no longer required the pilot usually gives the order like this（） .
Place names used should be those （）.