ready for entrance
ready for entrance，but gates cannot be closed completely
being made ready for entrance
not ready for entrance
第1题：
A message by flashing light consists of the call，the identity，the text，and the ______.
A.destination
B.answer
C.time
D.ending
第2题：
A vessel trawling will display a ______.
A.red light over a white light
B.green light over a white light
C.yellow light over a red light
D.white light over a green light
第3题：
Restricted areas at locks and dams are indicated by ______.
A.flashing red lights upstream and fixed red lights downstrem
B.yellow unlighted buoys
C.signs and / or flashing red lights
D.red daymarks upstream and green daymarks downstream
第4题：
white light whose characteristic is Morse (A)
group-occulting white light
composite group-flashing (2 + 1) white light
composite group-flashing (2 + 1) red or green light
第5题：
A buoy marking a wreck will show a(an) ______.
A.white light FL (2) and a topmark of 2 black spheres
B.occulting green light and may be lettered
C.yellow light and will be numbered
D.continuous quick white light and may be numbered
第6题：
A towing light is ______.
A.shown below the stern light
B.white in color
C.displayed at the masthead
D.a yellow light having the same characteristics as the stern light
第7题：
A buoy having red and green horizontal bands would have a light characteristic of ______.
A.group occulting
B.composite group flashing
C.Morse letter A
D.quick flashing
第8题：
A list signal of one white light indicates that the vessel is ______.
A.on an even keel
B.listing about 1° to the side the light is displayed on
C.listing over 5°With the light displayed on the high side
D.listing，and the chutes should be directed to the side where the light is displayed
第9题：
a junction with the preferred channel to the left
a sharp turn in the channel to the right
the starboard side of the channel
a wreck to be left on the vessel's port side
第10题：
identity
time of origin
reply
procedure code