A.18 months
B.2 years
C.3 years
D.5 years
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A.to
B.of
C.for
D.about
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
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
A.penetrations
B.plating
C.framing
D.brackets
A.examine
B.to examine
C.being examined
D.examining
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The end of the joint with the exterior threads is called the（）.
The angle at which the anchor flukes penetrate the soil is the（）.
The bottom of the mast rests on a part of the keel called the mast（）.
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
The burden of proving unseaworthiness is upon those who（）it.
Chain slings are suitable for heavy slender articles，such as（）.
Please arrange（）a surveyor to inspect the damaged bulkhead．
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
In order to withstand fluid head pressure on a ship，stiffeners are often attached to the bulkhead（）.
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（）.