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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Pilot ladder is （） on port side．
The iron mike is a(n) （）.
When the Pilot is embarked he or she （）.
Monsoons are characterized by （）.
Vessels must （） pilot at waiting anchorage．
The pilot said he （）our vessel directly to the berth．
The first indications a mariner will have of the approach of a warm front will be （）.
If the officer on watch is in any doubt as to the pilot’s actions，or intentions，he should （）.
Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
The transfer procedures for oil products are required to be posted （）.