A.None
B.One
C.Two
D.Three
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A.American Consul
B.Chief and Second Mates
C.Vessel's agent
D.vessel's owners
A.mine clearance operation
B.towing operation
C.dredging or surveying or underwater operation
D.fishing
A.vessel towing a submerged object
B.dredge underway and dredging
C.hydrographic survey vessel at anchor and surveying
D.None of the above
A.must be lighted
B.may have a flashing red light
C.may have a fixed white light
D.None of the above
A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector
最新試題
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
The end of the joint with the exterior threads is called the（）.
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.
The angle at which the anchor flukes penetrate the soil is the（）.
Please arrange the survey（）early．
In the ship construction portfolio，materials which do not conform to ASTM or ABS specifications must also include the（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
Chafing gear（）.
Periodic surveys to renew the load line assignment for a ship must be made at intervals not exceeding（）.
Cracks may be prevented from developing at the corners of welded plating inserts by（）.