问题
单项选择题
IMO has decided that all ships over 300TGt must be fitted with a NAVTEX receiver（）.
A.by 01 Feb 1992
B.by 01 Aug 1993
C.between 01 Feb 1992 and 01 Feb 1999
D.before 01 Feb 1992
答案
参考答案：B
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