单项选择题
If we have a pilot on board , we should take down () and hoist () .()
A. flag H ; flag G B. flag G; flag H C. flag H ; flag Q D. flag G; flag Q
单项选择题 When the anchor reaches the bottom ,hoist the anchor ()by day.
单项选择题 Letter “G” shows that“ ()”.
单项选择题 Letter “H” means“()”.