A.cast iron
B.forged steel
C.stainless steel
D.cast steel
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A.timber or steel rails
B.locomotives or boilers
C.railway passenger coaches
D.motor vehicles
A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold
A.the Coast Guard
B.the ABS
C.the shipyard fire department
D.a certified marine chemist
A.the customs
B.the Register Bureau of shipping
C.the shipyard fire department
D.a certified gas chemist
A.essential
B.important
C.good
D.a better operation
最新試題
In the ship construction portfolio，materials which do not conform to ASTM or ABS specifications must also include the（）.
In which case is the IOPP Certificate of an inspected vessel NOT invalidated?（）
The boom stops are installed on an offshore crane to（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
During fueling，all doors，hatches，and ports（）.
The angle between the flukes and the shank of an anchor is called the（）.
The above mentioned ship has been duly（）in accordance with the provisions of the convention referred to.
Please arrange the survey（）early．
The annual survey for endorsement of a Load Line Certificate must be held within（）.
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.