单项选择题
When the anchor reaches the bottom ,hoist the anchor （）by day.
A.ball
B.flag
C.light
D.lamp
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单项选择题
Letter “G” shows that“ （）”.
A. I have a pilot on board
B. I require a pilot.
C. I have stopped.
D. My vessel is healthy . -
单项选择题
Letter “H” means“（）”.
A. I have a pilot on board
B. I require a pilot
C. I have stopped
D. My vessel is healthy -
单项选择题
Letter “Q” means “（）”.
A. Man overboard
B. You are running into danger
C. My vessel is healthy.
D.I require a pilot.
