单项选择题

---What is your rudder?
---（）.

A.20°
B.20° starboard
C.Yes，sir
D.Sorry

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单项选择题

---Ease helm.
---Ease helm. （）.

A. Wheel midship
B. Course 20°
C. Steady
D. Port ten

单项选择题

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

A. No, 2 degrees port off course
B. Course 020 degrees
C. Steady
D.OK

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