单项选择题
The two factors which make underwater hull repair difficult are accessibility and the（）.
A.availability of tools B.shape of the hull C.pressure exerted by the water D.threat of progressive flooding
单项选择题 The required fireman’s outfits required for ship’s are not to be used for any other purpose EXCEPT for the（）.
单项选择题 The radio technician will come aboard（）the repairs.
单项选择题 The order of importance in addressing damage control is（）.
