题目：
The biggest problem you generally encounter while towing a single tow astern is（）.
A.the catenary dragging on the bottom
B.swamping of the tow
C.the tow tending to dive
D.yaw
答案：
参考答案：D
The biggest problem you generally encounter while towing a single tow astern is（）.
A.the catenary dragging on the bottom
B.swamping of the tow
C.the tow tending to dive
D.yaw
参考答案：D
