A.cast iron
B.forged steel
C.stainless steel
D.cast steel
您可能感興趣的試卷
你可能感興趣的試題
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
Let’s submit the case（） the cargo surveyor.
The conclusion is（）the said ship is fit to continue to sail.
Prior to burning or welding on a fuel tank on a ship，regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by（）.
In which case is the IOPP Certificate of an inspected vessel NOT invalidated?（）
The bottom of the mast rests on a part of the keel called the mast（）.
The document on a vessel，annually endorsed by an American Bureau of Shipping surveyor，is called the（）.
The end of the joint with the exterior threads is called the（）.
The burden of proving unseaworthiness is upon those who（）it.
During fueling，all doors，hatches，and ports（）.
Tensile stress is a result of two forces acting in（）.