题目内容

Your vessel is off a lee shore in heavy weather and laboring. Which action should you take?（）.

A. Put the sea and wind about two points on either how and reduce speed
B. Heave to in the trough of the sea
C. Put the sea and wind on either quarter and proceed at increased speed
D. Put the bow directly into the sea and proceed at full speed

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根据《IEC 61850继电保护工程应用模型》规定，SV数据集成员应按（）配置。

A. DA
B. DO
C. LN
D. LD

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叶片泵的优缺点是什么？

电杆起立后，调整好杆位，回填一步土，架上叉木，撤去吊钩及钢丝绳。然后，校整好杆身垂直度及横担方向（），再回填土。回填土时应将土块打碎，每回填（）mm应夯实一次，填到卡盘安装部位为止。最后，撤去缆风绳及叉木