單項選擇題When carrying out the voyage trial, the M-E is not necessary to take()trial.

A.starting
B.running
C.running-in
D.direction changing


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1.單項選擇題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

2.單項選擇題In the M-Emooring trial, the starting trial is carried under()

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