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  1. From time t = 0 to t = 10, the amount of heat energy absorbed by the substance P is 1.5 × 2000 × (130 - 40) = 270000 J. Therefore, the power of the heater is (270000 J) / (10 min) = 27000 J/min. The substance absorbs heat energy during the state...

    分類:科學及數學 > 數學 2020年10月18日

  2. 我猜你問的是I have more candies than yours. 這句有什麼錯。 文法上, than可以是連接詞(and, or)或介詞(in, before, 等等). 假如當連接詞, 兩邊必須是對等的. 左邊是句字, 右邊也是句字, 像toming88已經指出,I have more candies than you have (candies).從這個...

    分類:社會及文化 > 語言 2020年08月06日

  3. 500. I tried it once in iOS 13. When I was about to open the 501st one, a notification popped out stating that I have to close some tabs before I could open a new one.  In iOS 9 or before, we can only open 20 tabs

  4. 例1. My passport has been lost for many years, so I cannot provide it to you. 例2. My passport has been lost for many years, so it is not available to you.

    分類:社會及文化 > 語言 2020年06月15日

  5. .... So this does not make any economical sense. (Note - many countries develop nuclear technology because of strategical need, not economical. ...

  6. (a) 由 Sm 到 Sn 的函數, 對 Sm 的每一元素而言, 在 Sn 中有 n 種選擇. 因此共有 n^m 種選擇. 所以, Sm 映至 Sn 的函數有 n^m 個, 其中不存在     f(x) = 1 結果的有 (n-1)^m 個. 因此, 至少有一個 x 在 Sm 中使 f(x) = 1 的函數個數為:     n^m - (n-1)^m...

    分類:科學及數學 > 數學 2020年06月01日

  7. -----------------The Christmas Celebration at the Mall of HK----------------- Last Christmas at Landmark, Des Voeus Road Central, we friends were visiting the famous...

    分類:社會及文化 > 語言 2020年01月16日

  8. ..., Present and Future. Through a restless night, many spirits take him on a journey of pleasant memories of ...

    分類:社會及文化 > 語言 2019年08月27日

  9. There are many reasons impacting fuel efficiency. At the minimum, Toyota...

  10. .... The fairytale about Cinderella has won many generations and everyone who believes that a humiliated...

    分類:社會及文化 > 語言 2019年02月13日