. - - .......... * auto cad . :- - . . . . ӡ ( ) 30 . : - - - . . . . : - ● ♦ ♦ ♦ ♦ ● . ● 5 ѡ 400 . A b A ,B C, D D ȡ ɡ . A, B 0.27 ѡ _________________
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