問題詳情

42According to the Safety of Life at Sea (SOLAS) convention, it is______that all commercial ships larger than 300 gross tons were to be fitted with GMDSS equipment by 1 February 1999.
(A)mandatory
(B)desired
(C)mobilized
(D)devastated

參考答案

答案:A
難度:困難0.32
統計:A(8),B(4),C(7),D(4),E(0)

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