問題詳情
1. 食品檢驗中常使用「凱氏定氮法」利用樣品中氮原子含量間接推算蛋白質含量。今有不肖商人使用氮原子含量較高、成本較低但會危害人體的三聚氰胺(C3H6N6)取代蛋白質，從中謀取暴利。一般三聚氰胺是利用尿素((NH2)2CO)進行下列反應製得：(NH2)2CO → C3H6N6 + NH3 + CO2(反應式係數未平衡)。若今以 1 克三聚氰胺可取代 4 克蛋白質計算，欲製備三聚氰胺取代 168 克蛋白質時，至少需要幾克尿素？
(A) 20
(B) 60
(C) 80
(D) 120
(E)480。
(A) 20
(B) 60
(C) 80
(D) 120
(E)480。
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- Before they opened the restaurant, they had never dreamed of making such a hugep t within a few
- V. Vocabulary 18% 每題一分It is never h g to admit making mistakes. After all, no one is perfect.
- 【題組】(A) Not to mention (B) As a result of(C) Believe it or not (D) Needless to say
- As a w____s to the train crash, Mr. Lin is helping the police search for any signs of human rema
- 【題組】(A) mere (B) consequently (C) anything but (D) nothing more than
- 【題組】(A) so that (B) by which (C) as if (D) in that
- 【題組】(2)隱睪症導因於男嬰出生後，何種構造停留在腹腔中，阻礙精子的發育？ (A) A (B) C (C) D (D) E
- 【題組】(A) Think (B) Thought (C) Thinking (D) To think
- 【題組】(A) reminded (B) requested (C) hinted (D) convinced
- 【題組】(A) although (B) despite (C) however (D) while
內容推薦
- The patient’s c____n improved very slightly and the doctor said he needed to remain in the hospi
- 【題組】（ ）(３)某雜誌報導：「名列全球電子零組件大廠的鴻海集團，於臺北縣土城頂埔高科技園區設置研發中心，投資金額極高，除了增加地方稅收高達幾十億元之外，其上、中、下游的相關廠商也將預計帶來超過 1
- 除此之外，即使情況惡化，你也應該對自己的能力有信心。(3%)On ________________ (1%) that, even if the situation changes for _
- His coach trained him really hard because he had hopes of being s____ted for the national team.
- 當你獨立生活有困難時，你應該學著處理自己的問題，而不是向父母求救。(3%)
- Cycling is growing in popularity in Taiwan; yet, we need more f ies like better lighting along t
- 不論發生什麼事，你都要選擇樂觀並接受挑戰。(3%)__________________________, (2%) you have to ________________ (1%) opti
- The audience a____ded for five full minutes when the dancer finished her excellent performance.
- 1 體積含C、H、N三元素的氣體化合物，完全燃燒可得同一狀況下之二氧化碳 2 體積，水蒸氣 5 體積，氮 0.5 體積，則該化合物之化學式是 (A)CH2N (B)C2H7N (C)CH2N2
- Democracy, by definition, is to have a g t of the people, by the people, for the people.
- The child was so shocked that he couldn’t give an a e description of the robber’s appearance.
- In order not to appear rude or interrupt the meeting, the assistant w red to her boss that he ha
- 附圖為某人體內血糖濃度之變化，根據圖形，回答下列問題：(一格一分)【題組】(1)攝食後二小時，血液中的葡萄糖濃度因分泌物甲而恢復正常水準，則分泌物甲等於何種激素作用？
- One of the most popular r l activities for young people today is to sing at places like Holiday
- Illegal hunting is threatening the existence of many endangered species, making it difficult for
- The doctor has to e____e all the patient’s symptoms carefully before he gives a prescription.
- 下列哪一地形區的地質背景和其他三者不同？(A)墨西哥高原(B)圭亞那高地(C)巴西高原(D)巴塔哥尼亞高原。
- 當我們面臨到一連串挑戰的時候，我們應該總是保持信心，從不屈服。When we are 91 a 92 challenges, we should always 93 and never 94 .【題組
- The minister a ed the relaxation of import restrictions on U.S. beef products.
- 多數美國人覺得吃豬肝很噁心。( … find it …) (2%)_______________________________________________________________
- VI. Translation (12%) (每格限填至少兩字)今天早上我沒有及時抵達車站趕上火車。我昨晚不應該熬夜的。(3%)This morning I didn’t get to the
- (甲)資訊工業；(乙)棉紡織業；(丙)汽車工業；(丁)軍事工業。美國工業由 1800 年至 2000 年間的發展歷程，其正確順序為何？ (A)甲→乙→丙→丁 (B)乙→丙→丁→甲 (C)丁→丙→
- When J.K.Rowling knew that her novel was going to be published, she b med with joy.
- The prince enjoyed no special p es and was treated like all the other students in that boarding
- 這個社區是由亞洲人和非洲人所組成的。(1%)The community _______________________ (1%) Asians and Africans.