单项选择题
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
A.taken B.take C.took D.taked
单项选择题 Before GMDSS, if the radio officer on board is serious ill,（）.
单项选择题 What following is not among the function of SOLAS ships?（）
单项选择题 SOLAS ships shall be equipped with（）.
