A.very quick flashing
B.flashing
C.fixed
D.occulting
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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
最新試題
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（）.
Is the pilot ladder all right at this （）
The pilot station （） close west of the end of the breakwater．
The iron mike is a(n) （）.
There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．
The pilot motor launches are （） blue，with the PILOT in white．
It’s all right to rig the pilot ladder on lee side （）.
THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.
The pilot said he （）our vessel directly to the berth．
The pilot is on board,（） ?