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
您可能感興趣的試卷
你可能感興趣的試題
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
Vessels must （） pilot at waiting anchorage．
The pilot motor launches are （） blue，with the PILOT in white．
On no account （）proceed without pilot in this water area．
Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
It’s all right to rig the pilot ladder on lee side （）.
When the Pilot is embarked he or she （）.
The first indications a mariner will have of the approach of a warm front will be （）.
When a pilot is on board to pilot the vessel the Letter （） must be hoisted．
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）
Which publication should you check for complete information on Puget Sound weather conditions? （）