航海英语航海图书资料章节练习(2018.03.18)

单项选择题
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
A.air gap
B.freeboard
C.penetration
D.water depth
单项选择题
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
A.Weekly Admiralty Notices to Mariners
B.The Mariners Handbook
C.Ocean Passages for the World
D.Symbols and Abbreviations used on Admiralty Charts，Chart 5011
单项选择题
A message by flashing light consists of the call，the identity，the text，and the （）.
A.destination
B.answer
C.time
D.ending
单项选择题
Magnetic information on a chart may be （）.
A.found in the center(s) of the compass rose(s)
B.indicated by isogonic lines
C.found in a note on the chart
D.All of the above
单项选择题
Attention is called to the fact that in many cases pipelines are not （） and charted depths may be decreased by up to 2 meters．
A.concealed
B.buried
C.existed
D.built
单项选择题
The pilot is on board,（） ?
A.is it
B.isn't it
C.is he
D.isn't he
单项选择题
For full information regarding the current circulation of the Indian Ocean，（） Sailing Direction，Current Atlas，etc．
A.watch
B.look for
C.see
D.regard
单项选择题
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
A.the meridian through the object of the bearing
B.the meridian through the ship's position
C.the meridian midway between the ship and the object
D.any meridian
单项选择题
The changes in the channel’s sands and buoys on this coast are （） this chart can not be considered as a safe guide of the channel．
A.frequent
B.so frequent
C.frequent that
D.so frequent that
单项选择题
Clearance gauges at bridges indicate （）.
A.the height of the tide
B.depth of water under the bridge
C.charted vertical clearance at mean low water
D.distance from the water to low steel of the bridge