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Warning: mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, boolean given in C:\htdocs\ktword\contents_path_utils.php on line 110
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  1. 물리학 (Physics)
    1. 자연현상을 대상으로하여 물리량들의 상호작용을 이해하는 과학
  2. 화학 (Chemistry)
    1. 물질의 성질,조성,구조,변화 및 그에 수반하는 에너지 변화를 연구하는 자연과학의 한 분야
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1064 : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') group by a.id order by pre_ord' at line 8
Warning: mysqli_fetch_assoc() expects parameter 1 to be mysqli_result, boolean given in C:\htdocs\ktword\contents_db_qry.php on line 36

    Warning: Invalid argument supplied for foreach() in C:\htdocs\ktword\contents_display.php on line 7

 
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