单项选择题
The American Petroleum Institute recommends magnetic particle inspection for（）.
A.anchor chain
B.wire rope
C.connecting links
D.pendant wires
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Temporary Certificates of Inspection for offshore drilling units are effective until the （）.
A.Operations Manual is approved
B.Minerals Management Service approval is issued
C.classification society approval is issued
D.permanent Certificate of Inspection is issued -
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Spontaneous ignition can result from（）.
A.an unprotected drop-light bulb
B.careless disposal or storage of material
C.smoking in bed
D.worn electrical wires on power tools -
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Records of tests and inspections of a cargo vessel’s fire extinguishing systems shall be kept on board（）.
A.for 1 year
B.for 2 years
C.until the next Coast Guard inspection
D.until the vessel's Certificate of Inspection expires
