单项选择题

Steer the wheel carefully and keep a sharp lookout （） .

A. look out
B. look around
C. look at

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单项选择题
---Slow ahead both engines! ---Slow ahead both engines! （）!

A. Both engines slow ahead
B. Engine slow ahead port
C. Engine slow ahead starboard
D. Engine both ahead
单项选择题
---Slow ahead! ---Slow ahead! （）!

A. Engine ahead slow!
B. Engine slow ahead!
C. Ahead engine slow!
D. Yes, sir
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