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單項(xiàng)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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單項(xiàng)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

單項(xiàng)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

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