[課業] 機械原理:Realtime－2016徵求年菜推薦網路訂購最紅的商家.年菜訂購?台北年菜外送餐廳推薦(年菜)?年菜.今年不想做年菜推薦,網路宅配哪一家好?

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批踢踢實業坊 Examination 板

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[課業] 機械原理

May 18th 2014, 16:51, by waokgla

作者waokgla (QQ)

看板Examination

標題[課業] 機械原理

時間Sun May 18 16:51:27 2014

業] 國考課業相關問題，非歷屆考題的討論，如學理觀念的釐清。有一題是這樣子的若鏈輪速度比要求約為四,為降低磨損的考慮,則最佳兩輪齒數為 (A)15,60 (B)16,64 (C)17,67 (D)19,76 答案是C 沒詳解不懂意思謝謝大家幫忙 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 49.158.215.11 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1400403089.A.20B.html

→ NTCU9527:齒輪數最好大於17齒，為質數或奇數 05/18 16:58

→ waokgla:謝謝不過我剛剛有看到"約"為4 設3.9 1/3.9 (c)選項接近 05/18 17:07

→ waokgla:這樣可以嗎@@ 05/18 17:07

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