three balls in a vertical line
two balls in a vertical line
one ball near the foremast and one ball at each fore yard
one diamond near the foremast head and one ball at each fore yard
第1题：
A vessel aground would show the same dayshape as a ______.
A.vessel towing a submerged object
B.dredge underway and dredging
C.hydrographic survey vessel at anchor and surveying
D.None of the above
第2题：
Persons who have taken part in salvage operations，notwithstanding the express and reasonable prohibition on the part of ______________，have no right to any remuneration.
A.the vessel from which the services were rendered
B.the vessel to which the services were rendered
C.the persons whose lives were saved
D.the salvors of the vessel，her cargo and accessories
第3题：
When clearing customs for a foreign voyage，which of the following is processed at the custom's house and returned to the vessel? ______.
A.Shipping Articles
B.Traveling Curio Manifest
C.Official Logbook
D.Cargo Gear Register
第4题：
a vessel towing by pushing ahead
a power-driven vessel，not towing
a barge being pushed ahead
either answer A or answer B
第5题：
LAND-BASED AUTHORITY CONDUCTING AND CO-ORDINATING SEARCH AND RESCUE OPERATIONS IN A DESIGNATED AREA defines ______．
A.RCC
B.OSC
C.CSS
D.GPS
第6题：
In terms of vessel manning，a watch is the ______.
A.direct performance of deck or engine operations in a scheduled and fixed rotation
B.performance of maintenance work necessary for the vessel's safe operation，on a daily basis
C.performance of lookout duties
D.direct performance of cargo loading and discharge operations only
第7题：
A vessel showing a rigid replica of the International Code flag "A" is engaged in ______.
A.diving operations
B.dredging
C.fishing
D.mineclearance operations
第8题：
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white?
A.A vessel engaged in diving operations
B.A pilot vessel
C.A vessel trawling
D.All of the above
第9题：
A vessel engaged in mine clearance operations is called ______.
A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel constrained by her draught
D.a vessel not under way
第10题：
One
Two
Three
Four