The greatest effect on stability occurs from loose liquids flowing().
A. from side to side in the tanks of the vessel
B. from fore to aft in the tanks of a vessel
C. in and out of a vessel that is holed in a wing tank
D. in and out of a vessel that is holed in a peak tank
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毕业论文(设计)主要属于哪种类型的实践教学活动()。
A. 基础性实践教学
B. 职业性实践教学
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D. 创新性实践环节