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下列选项为某变速器一、二、三、四挡的传动比，则三挡的传动比为（）。 A: 0.969 B: 1.286 C: 1.944 D: 3.455
下列选项为某变速器一、二、三、四挡的传动比，则三挡的传动比为（）。 A: 0.969 B: 1.286 C: 1.944 D: 3.455
关于呼吸衰竭的概念，下列哪项不对 未知类型：{'options': ['[tex=37.643x1.286]qv8PRp0Nu4CTJnb2wh5Oife6waC3/PfjtPvcHzfSFD/yZdGqgHxKKChVlj4YaK9uEmSS1k6gZPfyxkofyxLfBKDrcMwdyIGv1/cFHQTUegb93Qu3QwWaIB0gHrV5s5jkNNYHaiq+l0SMIWuCngSYtSB66EtXuzLUvF8Hvf/5WYo=[/tex]', '[tex=31.643x1.286]quThzdWXvX3Xib/wpbrt6Fr51VC6DZmZnCPT+YfKMLo0SLhNzGeaJqiOwxBmORYkpFsT4sAG7HyQvAoF+m0tb+kEbIZxYFtZwrfDA1RBJdFAYREHfULcNHkPOXfNwYxBPPp1dwg3MJaLEHDEtzPVgQ==[/tex]', '[tex=18.357x1.286]S/2ETKMvmzE6x1UM2HM0l+bMI+5qw7hZDfEQNlZxwciIXX06NZf87085QeQi7MwFwqjPTB85Xf6MdGaCaV2/xA==[/tex]', '[tex=29.357x1.286]4F50AEca5mLc7mrOkBB5CWAJ+xZeVwSfk/6L53u20NXF/sBrd9AbA6OuUbMyCSypdGJS6tIJqNM6Dm7GSps3kVkrafzsbRahwMwQxgMhMCFO5aCT1vOAKwTsYFCvXBE/57ayeJjEXBdZGSaycJdZeg==[/tex]', '[tex=19.357x1.286]ugYNHl5LpwD9TNlybMGsgLS+ePZKosZM+O7ete9/WKkAl7ZQOhcFhbeEoskNilbiECBWs+miU2VfsO357yN3l7E8BfRkmhbs0hqEW0lEGJo=[/tex]'], 'type': 102}
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下列变量组（）是一个闭回路。 A: {x，x，x，x，x，x} B: {x，x，x，x，x} C: {x，x，x，x，x，x} D: {x，x，x，x，x，x}
下列变量组（）是一个闭回路。 A: {x，x，x，x，x，x} B: {x，x，x，x，x} C: {x，x，x，x，x，x} D: {x，x，x，x，x，x}
以下谓词蕴含式正确的是（）: (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)
以下谓词蕴含式正确的是（）: (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)