单项选择题

After repair, the voyage trial of the M-E should be done （）

A.after the mooring trial has passed
B.before the mooring trial
C.under the surveyors supervision
D.after repair

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单项选择题

A.cold condition
B.stillness condition
C.certain air pressure
D.the surveyors supervision

单项选择题

A.take a further inspection in the voyage
B.check and repair, then retrial
C.do as the surveyor’s requirement
D.retrial

单项选择题

A.starting
B.torsion vibration
C.direction changing
D.running