立式离心泵安装应以主轴联轴器、法兰平面水平为准，其允许斜度为0.05毫米/米。
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有助于提高团体凝聚力的是（）
A. 团体的同质性较高
B. 团体具有较大的规模
C. 加入团体的难度很大
D. 团体形成的时间较长
E. 团体过去有很好的成功经验
The holding power of an anchor is the（）.
A. maximum sustained vertical load an anchor will resist before dragging
B. maximum sustained horizontal load an anchor will resist before dragging
C. maximum sustained vertical load an anchor will resist before the mooring line breaks
D. maximum sustained horizontal load an anchor will resist before the mooring line break
政策执行成功的重要手段是（）。
A. 执行者因素
B. 资源因素
C. 执行工具
D. 环境因素
The lifesaving signal indicating You are seen - assistance will be given as soon as possible is the（）.
A. vertical motion of white flags
B. vertical motion of a white light or flare
C. firing of a green star signal
D. None of the above
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