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| 質能守衡動能公式證明
Jul 29th 2013, 09:13
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我看很多人都適用功能定理證明的 我不要那個方法 我記得我國中時 老師是先用質能守衡 再 切入牛噸力學 加入許許多多繁複的計算 證明出來的 所以我要<sep/>...
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| 跪求 統計學 原文題型 高手求解~~~ (20點)
Jul 29th 2013, 09:33
拜託高手高手高高手救救一個可憐的暑修生....
我必須上台講解題型給同學聽
麻煩大大幫個忙 幫我翻譯一下題型 還有教教我如何講解跟解題 ><
The breaking point of a particular thread is known to be normally distributed with a mean and standard deviation of 0.30 and 0.02 foot pounds,respectively.
The manufacturer wishes to state that 90% of the threads have a breaking point of at least Y foot pounds.
What should the value of Y be?
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| 普生題目兩題解題(急)
Jul 29th 2013, 09:36
(C) 1.假如把切離的心臟放在純食鹽溶液中，心臟即
A.跳動減慢 B.跳動加速 C.停在放鬆的狀態 D.停在收縮的狀態
{ 第一題請解釋為何為C ， 以及什麼情況下會造成 ABD 的現象 }
(A) 2.下列何處的二氧化碳濃度最高?
A.在體細胞 B.哺乳類的肺泡 C.靜脈 D.在肺泡
{ 第二題請解釋個選項的濃度排名、原因 }
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