[单选] Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.

淡水鱼为什么会有土腥味？如何除去？ The term of Landfall means（）. Land first sighted when vessel approaching from seaward。 Land last sighted when vessel leaving from a port。 in sight of one another when vessel underway。 in sight of an island during a ship on her voyage。 简述灯具射距的概念。 在通道调板中按Ctrl键单击新建通道按钮，会弹出“新专色通道”对话框，设置完毕后，单击“好”按钮，即可新建一个专色通道。 根据烧结设备供风方式不同烧结方法有哪些分类？ Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.