单项选择题
The VDR system is designed to operate（）once it is set up correctly.There is no user interaction.
A.automatically
B.accurately
C.promptly
D.conspicuously
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Information from the stations and installations shall be appropriatelysharedby（）.
A.all crew members
B.all the watchkeeping personnel
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The only cylindrical chart projection widely used for navigation is the（）.
A.Lambert conformal
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The notice which is based on original information is indicatedby（）nexttothenotice number.
A.a star
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C.a dash
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