When a ship is fully loaded, it needs to prevent the main engine to be（）.While a ship is fully empty, it needs to prevent the main engine to be（）.
- Aoverspeed；overload
- Boverload；overspeed
- Cover mechanical load；over thermal load
- Dover torque；overspeed
问题
When a ship is fully loaded, it needs
参考解析：
分类：船舶电气与船舶安全题库
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