【判断题】【消耗次数：1】
由于空心轴的承载能力大且节省材料，所以工程实际中的传动轴多采用空心截面。
①
正确
②
错误
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相关题目
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关于设计传动轴时的正确概念为：（）。
①
要使传动轴最高转速尽可能接近0.7倍临界转速；
②
需要临界转速较高，传动轴实心；
③
要使临界转速较低，传动轴较短；
④
要使传动轴最高转速远远低于临界转速，传动轴较短.
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关于传动轴万向节的正确概论有：（）。
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单十字轴万向节不等速；
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双十字轴万向节等速；
③
多十字轴万向节合适安排可以实现等速；
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双十字轴万向节不等速，转矩也不等
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