单项选择题
If the freeboard is more than 9 meters, we should rig（）.
A. gangway B. ladder C. pilot ladder D. gangway combined with pilot ladder
单项选择题 The pilot boat took the pilot （）the ship.
单项选择题 If the freeboard is less than 9 meters, we should rig（）.
单项选择题 It is （）higher.
