--- Are you on your course?
---Reply: （）!

单项选择题---Are you on your course? ---Reply: （）!

A. Course 040 degrees
B. Yes, right on the course
C. Steady on the course
D. Yes

单项选择题How is the ship heading?（）

A. Port fifteen.
B. Starboard ten.
C. Course 240 degrees.
D. OK.

单项选择题---Mind the wheel! ---（）.

A. Yes, sir
B. Mind the wheel
C. Port five
D. I will

单项选择题--- How is the steering? ---（）.

A. Steady
B. All port
C. Answers all right
D. In position

单项选择题---What rudder?---（）.

A. Port fifteen
B. Fifteen
C. Course 120 degrees
D. Good rudder