A.the customs
B.the Register Bureau of shipping
C.the shipyard fire department
D.a certified gas chemist
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A.essential
B.important
C.good
D.a better operation
A.at the discretion of the inspector，but in no greater detail than required for original certification
B.at the discretion of the inspector，but in no lesser detail than required for original certification
C.generally similar in scope to the inspection required for certification，but in less detail
D.equivalent to the inspection required for certification
A.the remind of the master
B.the refer of the master
C.the render of the master
D.the request of the master
A.such／that
B.so／that
C.such／to
D.so／as to
A.None
B.One
C.Two
D.Three
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The bottom of the mast rests on a part of the keel called the mast（）.
During fueling，all doors，hatches，and ports（）.
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（）.
Chafing gear（）.
Chain slings are suitable for heavy slender articles，such as（）.
Please arrange the survey（）early．
Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
The angle at which the anchor flukes penetrate the soil is the（）.
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the（）.
The burden of proving unseaworthiness is upon those who（）it.