20.20.「Obstruction, which has been swept by wire to the depth shown」- it will be marked in the chart
21.21.I am not ________ to receive your message.
22.22.Receiving point means a mark or place at which a vessel comes under __________ entry, transit,
or escort procedure.
23.23.Vessel is _______ traffic lane on course 240 and speed 20 Knots.
24.24.When the general emergency alarm is sounded, which consists of seven short blasts and one
________ blast, all crew members have to go to their assembly station.
34.34.Take off (to)：To _____ off from a vessel deck (helicopter).（依據IMO SMCP）
35.35.Proceed (to)：To _____ or head for a certain position or to continue with the voyage.（依據IMO
36.36.Berth：The place _____ to a vessel when anchored or lying alongside a pier, etc.（依據IMO
37.37.Refill the _____ of the date logger.（依據IMO SMCP）
38.38.I have accidental spillage of oil. I require floating _____ .（依據IMO SMCP）
39.39.A：Where is the fire？
B：Fire is in ____ .（依據IMO SMCP）
40.40.When a ship moves from water of one density to water of another density, without the change of
her displacement, _____ will change.
(A)the center of gravity
(D)the force of buoyancy