单项选择题
In which case is the IOPP Certificate of an inspected vessel NOT invalidated?（）
A.The required oily-water separator malfunctions
B.The ship is transferred to Liberian registry
C.An annual survey is conducted fifteen months after the date of certificate issuance
D.A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator
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单项选择题
In the ship construction portfolio，materials which do not conform to ASTM or ABS specifications must also include the（）.
A.chemical and physical properties of the material
B.name of the alternative standard or specification
C.the ASTM or ABS specification the material approximates
D.manufacturer or origin of the material -
单项选择题
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.
A.penetrations
B.plating
C.framing
D.brackets -
单项选择题
I saw the cargo surveyor（）the cargo on deck just a minute ago．
A.examine
B.to examine
C.being examined
D.examining
