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
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THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.
The step of a pilot ladder which prevents the ladder from twisting is the （）.
The iron mike is a(n) （）.
The pilot said he （）our vessel directly to the berth．
Keep （） to that point,said the pilot．
Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
Monsoons are characterized by （）.
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（）.
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）
Gangway （）with pilot ladder on my starboard side．