单项选择题
Letter “H” means“（）”.
A. I have a pilot on board B. I require a pilot C. I have stopped D. My vessel is healthy
单项选择题 Letter “Q” means “（）”.
单项选择题 Mind your head .I am dropping the（） now!
单项选择题 If the freeboard is more than 9 meters, we should rig（）.
