单项选择题
A.one engine and a steering oar
B.both engines at the same speed
C.one engine at a time
D.one engine running at reduced speed and controlling the vessel with the other
单项选择题 The area around Cape Charles is（）.
单项选择题 The angular movement of a vessel about a horizontal line drawn from its bow to its stern is （）.
单项选择题 That half of the hurricane to the right hand side of its track (as you face the same direction that the storm is moving) in the Northern Hemisphere is called the（）.