单项选择题
Holes in the bulwark,Which allow deck water to drain into the sea, are（）.
A.doggers B.fidleys C.freeing ports D.swash ports
单项选择题 How should cargo tank hatches be protected when the ullage opening is open and the tank not gas free?（）.
单项选择题 Hygroscopic cargoes should be ventilated when（）.
单项选择题 I have no choice（）to put such remarks.
