单项选择题
----Hard-a-port! ----Hard-a-port!（）!
A. Hard-a-port B. Wheel hard-a-port C. Wheel on hard-a-port D. Yes
单项选择题 --- Port five! ----Port five!（）!
单项选择题 Duty officer and （）keep navigational watches on the bridge at sea.
单项选择题 ---“（）” ---“Two degrees on starboard.”
