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輪機工程(概要)（包括推進裝置、輔機與輪機英文）題庫下載題庫

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33.During , the ship is secured to the pier with mooring lines while the main engines are used to drive the propeller.
(A)shop trials
(B)sea trials
(C)dock trials
(D)launched



33.During , the ship is secured to the p..-阿摩線上測驗