题目内容

低等植物与高等植物的区别？

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The records of ship security training, drills and exercises shall be kept in the working language or languages of the shipIf the language or languages used are not（）, a translation into one of these languages shall be included.

A. English, French or Spanish
B. Chinese, English or French
C. English, French or Japanese
D. Chinese, English or Spanish

什么是经纪业务？

体细胞杂交的步骤？

船体的总纵弯曲的受力特点是什么？