In small angle stability,the metacentric height().
A. is found in the hydrostatic tables for a level vessel
B. multiplied by the displacement yields the righting moment
C. is always positive
D. is calculated by subtracting KG from KM
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样本的均值可以反映测试数据的离散程度。
A. 正确
B. 错误
顾客满意指数是指通过特定的因果关系模型对()的测评结果。
在我国特有的木结构装饰形式中,用于改善指教转弯处生硬的线条是()
充气机械搅拌式浮选机是通过调节进气管开关及叶轮转速来调节充气量。
A. 正确
B. 错误