A.is it
B.isn't it
C.is he
D.isn't he
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A.pilot
B.speaker
C.standby wheel
D.automatic pilot
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
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
A.convey
B.convoy
C.escort
D.conform
A.the vessel
B.shall not vessel
C.the vessel should
D.should vessel
A.light，variable winds with little or no humidity
B.strong，gusty winds that blow from the same general direction all year
C.steady winds that reverse direction semiannually
D.strong，cyclonic winds that change direction to conform to the passage of an extreme low pressure system
最新试题
The characteristic of a lighted cardinal mark may be （）.
Which publication should you check for complete information on Puget Sound weather conditions? （）
THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.
There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．
Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
The iron mike is a(n) （）.
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）
Vessels must （） pilot at waiting anchorage．
Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in （）.