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单项选择题
A.seaman
B.sailor
C.duty sailor
D.OS
单项选择题
A. What rudder?
B. How is the heading?
C. How answer?
D. What course?
单项选择题
A. that the port rudder answers very well.
B. that the port rudder answers slow.
C. that the port rudder answers quickly.
D. that the port rudder is broken.
单项选择题
A. on watch
B. taking watches
C. standing watches
D. keep watches