单项选择题
The Captain of the Port has closed to navigation，and buoyed，a section of a harbor. These buoys would be painted（）.
A.red or green to conform with the other lateral aids B.red and green horizontally-striped C.solid yellow D.white with orange marks
单项选择题 Red lights may appear on（）.
单项选择题 Preventer bars are fitted on lifeboat releasing hooks to prevent（）.
单项选择题 Please tell your tallymen to（）out the marks in the holds during discharging.
