[tex=38.071x1.286]gonLSe2SY58r3xeQvKQCHS89QC5MHdSTd5QwDdFlGI3PbC4ZiGbVg7IpPa7RoXPz6yz8HqXl7DMx/mayLzk1We+HESBji7DAqrUF4oQVhaoVq9Ixb+uDlAwcv4lBeOP3617a4SmHwhkT5XWP4wlsR+2q8Sv8dvDlZYLuGxjSwTs=[/tex][tex=19.0x1.286]JJvYqECDrYZA2OBiJQbLBO0l5BEYdXSJ/JSE6606AAFlS2ngJVkfCbro6O7YBAFSovEnwkeY7u/XkrdmCEskGw==[/tex]

[tex=33.5x1.286]ona4vIUi6MKyVjKFpNFUFCOTL1P1rGAeORR4MSwetnB6eY7dyTmpBeL97fLWAr4a6IkzvC10qVrJBvOMlPQIlhB6ON2ZI2HtYkfh6XokvRtAFGoUy16SFSFNkEcwYOUYaSPowWTUKAx4MZxvkPesKg==[/tex][tex=38.071x1.286]s7639tSWqzOWD96PCEL0+pjvPLXzxQTT9ACt0saJIvch9jK/Wy/YUQlBDznPoGjwUoO72AV0877NXmQ7I99yvZuZ/7TtD8ZLH9qqrm6EwsaJEgvn1+A894ffP/56JhI8ZDumUyh8rmeGP5OeZV9+oYQpU6QxaTkDu6OWlKxO7903lwH482wcKyzB2YJx1El3[/tex][tex=19.786x1.286]SPec2mDY6ArCQQBs0qBXc9ZNuzoyhNtRUcRffI/cXE2bHFtq86v61j86ivS+YeVuYkQsTBLffuaTkDp9j58nwUsU7Ta+BeWyBiieAYrKFT0=[/tex]

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

[tex=29.857x1.286]CYxwPF7BsEvspkxkg/4trUi2D9pl7yxfhxOgivRQvhjhQaqYABaBYKnFkGpu4psS6zVAkHQ+pn/gB5unFJt7nSNyRyJqTY3VR2bAtjJ5Xoq8RRq4YeVEB34pJ1mMSDmyV+GIqtzgZs2ZiwGpJ4tFjA==[/tex][tex=32.571x1.286]NjqvWAVrON7tfrtdkkHcO7S0jgW3bzz1l3uyRqKi4PkMEr7Wm2vPCotjmKKSxbFtzf9ZzKScyxFWLhDJ6L1kik1szk5wUVtkPJR9j6eSIP/VOHE3OMHUA7NcUnAjMngP6bXH5aUDCRbMtAV7ZpPg8w==[/tex][tex=38.071x1.286]ohlEq94TktBDlJLdp9BLEscgGjlez3JKU5JU5w/LR+3ycuaUuD5iIUpIdnKPs4ntTdpMmhW1r60GPc/b/jdN4YNHVzjHZO+8AjYH07ymINaSDU7xkDvO/pf9FVxFj8cuH+9z5Q3u/MyOpwTb9URKhVKUSn9z0LH43MGNfN0dJxIiGOYF0a9F7bLutg13bB+U[/tex][tex=23.714x1.286]P8LsX+lbqn1ert7JmnpzVFDSVhzI1Z/E4StQAUNJbf12aWtXsaTnzsPsQsaJxkuR2F3HcES73BjDv/9RDqUGyWWIoaCzzFTOAr5QHpjyz4Yy/guyb6zW8RovA/+Rufjs[/tex]

[tex=29.857x1.286]CYxwPF7BsEvspkxkg/4trUi2D9pl7yxfhxOgivRQvhjhQaqYABaBYKnFkGpu4psS6zVAkHQ+pn/gB5unFJt7nSNyRyJqTY3VR2bAtjJ5Xoq8RRq4YeVEB34pJ1mMSDmyV+GIqtzgZs2ZiwGpJ4tFjA==[/tex][tex=32.571x1.286]NjqvWAVrON7tfrtdkkHcO7S0jgW3bzz1l3uyRqKi4PkMEr7Wm2vPCotjmKKSxbFtzf9ZzKScyxFWLhDJ6L1kik1szk5wUVtkPJR9j6eSIP/VOHE3OMHUA7NcUnAjMngP6bXH5aUDCRbMtAV7ZpPg8w==[/tex][tex=38.071x1.286]ohlEq94TktBDlJLdp9BLEscgGjlez3JKU5JU5w/LR+3ycuaUuD5iIUpIdnKPs4ntTdpMmhW1r60GPc/b/jdN4YNHVzjHZO+8AjYH07ymINaSDU7xkDvO/pf9FVxFj8cuH+9z5Q3u/MyOpwTb9URKhVKUSn9z0LH43MGNfN0dJxIiGOYF0a9F7bLutg13bB+U[/tex][tex=23.714x1.286]P8LsX+lbqn1ert7JmnpzVFDSVhzI1Z/E4StQAUNJbf12aWtXsaTnzsPsQsaJxkuR2F3HcES73BjDv/9RDqUGyWWIoaCzzFTOAr5QHpjyz4Yy/guyb6zW8RovA/+Rufjs[/tex]

[tex=29.857x1.286]CYxwPF7BsEvspkxkg/4trUi2D9pl7yxfhxOgivRQvhjhQaqYABaBYKnFkGpu4psS6zVAkHQ+pn/gB5unFJt7nSNyRyJqTY3VR2bAtjJ5Xoq8RRq4YeVEB34pJ1mMSDmyV+GIqtzgZs2ZiwGpJ4tFjA==[/tex][tex=32.571x1.286]NjqvWAVrON7tfrtdkkHcO7S0jgW3bzz1l3uyRqKi4PkMEr7Wm2vPCotjmKKSxbFtzf9ZzKScyxFWLhDJ6L1kik1szk5wUVtkPJR9j6eSIP/VOHE3OMHUA7NcUnAjMngP6bXH5aUDCRbMtAV7ZpPg8w==[/tex][tex=38.071x1.286]ohlEq94TktBDlJLdp9BLEscgGjlez3JKU5JU5w/LR+3ycuaUuD5iIUpIdnKPs4ntTdpMmhW1r60GPc/b/jdN4YNHVzjHZO+8AjYH07ymINaSDU7xkDvO/pf9FVxFj8cuH+9z5Q3u/MyOpwTb9URKhVKUSn9z0LH43MGNfN0dJxIiGOYF0a9F7bLutg13bB+U[/tex][tex=23.714x1.286]P8LsX+lbqn1ert7JmnpzVFDSVhzI1Z/E4StQAUNJbf12aWtXsaTnzsPsQsaJxkuR2F3HcES73BjDv/9RDqUGyWWIoaCzzFTOAr5QHpjyz4Yy/guyb6zW8RovA/+Rufjs[/tex]

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)

下列式中错误的是： A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)