单项选择题
Shell plating is（）.
A.the galvanizing on steel B.a hatch cover C.the outer plating of a vessel D.synonymous with decking
单项选择题 Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.
单项选择题 Prior to magnetic particle inspection of anchor chain，the chain should be（）.
单项选择题 Pollution regulations require that each scupper in an enclosed deck area have a（）.
