A.squaring the corners
B.rounding the corners
C.plug welding the corners
D.slot welding the corners
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A.cast iron
B.forged steel
C.stainless steel
D.cast steel
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
最新試題
Tensile stress is a result of two forces acting in（）.
The angle between the flukes and the shank of an anchor is called the（）.
The boom stops are installed on an offshore crane to（）.
At least one reinspection shall be made on each vessel holding a Certificate of Inspection valid for two years. This inspection shall be held between the tenth and fourteenth months of the duration period of the certificate and shall be（）.
The angle at which the anchor flukes penetrate the soil is the（）.
Chain slings are suitable for heavy slender articles，such as（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
I saw the cargo surveyor（）the cargo on deck just a minute ago．
Before welding in a tank that has carried petroleum products，the tank must be certified by （）.
Connecting elements of a mooring system should be fabricated from（）.