A.which B.where C.what D.who
单项选择题Place names used should be those （）.
A.specified by international authorities B.specified by national authorities C.on standard map D.on the chart or Sailing Directions in use
单项选择题Pilot ladder is （） on port side．
A.equipped B.rigged C.put on D.put off
单项选择题Passage through the Suez Canal is operated on a （） system．
A.convey B.convoy C.escort D.conform
单项选择题On no account （）proceed without pilot in this water area．
A.the vessel B.shall not vessel C.the vessel should D.should vessel
单项选择题Monsoons are characterized by （）.
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
