著名的意大利比萨斜塔倾斜的主要原因是（）。

If your vessel is the stand-on vessel in a crossing situation ______.

A.you must keep your course and speed

B.you may change course and speed as the other vessel must keep clear

C.the other vessel must keep her course and speed

D.both vessels must keep their course and speed

If necessary to avoid collision or allow more time to ()the situation，a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

A.access

B.process

C.profess

D.recess

A.Ground speed

B.Boarding speed

C.Relative speed

D.Speed of the vessel

A.On the same course as your vessel

B.At the same speed as your vessel

C.On the same course and speed as your vessel

D.On a reciprocal course at the same speed as your vessel

An anemometer on a moving vessel measures ______.

A.apparent wind speed only

B.true wind speed and true wind direction

C.true wind speed only

D.apparent wind speed and true wind direction

A.Decrease speed

B.Increase speed

C.Turn to port for a vessel on her own port side

D.Turn to starboard for a vessel on her own port side

TO INCREASE THE DISTANCE TO THE VESSEL AHEAD BY REDUCING ONE′S OWN speed means ______．

A.Fall back

B.Keep low speed

C.Running after

D.Drop back

A.evaluate the danger of each closing visual or radar contact

B.adjust speed with due regard for the weather and visibility

C.reduce speed only where local speed limits are posted

D.enter all required test and inspection results in the vessel's log or other record carried on board