50 x 200 =10,000 hours / 2000 h ( 40 h.x 50 weeks) =
5 years for those passed.
10-20 years or never for half failed.
150 x 60 x 200 = 1.8 mil. x 90% = 1.6 mil words covered
本帖於 2010-03-21 14:17:19 時間, 由版主 林貝卡 編輯
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回複:150 x 60 x 200 = 1.8 mil. x 90% = 1.6 mil words covered
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03/21/2010 postreply
23:35:51