正确答案: A

曲轴尾法兰/艉轴

题目：船舶轴系是从（）起至（）止。

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学习资料的答案和解析：

[单选题]大、中型船舶的轴系各中间轴连接法兰广泛采用（）螺栓连接。

圆锥形

[单选题]平衡舵是舵的旋转轴线位于（）。

舵叶的中间

[单选题]All three systems have the ports （） to swirl the incoming air and direct it in the appropriate path.

being rounded

[单选题]Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause （）.

the formation of sulfuric acid