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• 21. How many of the following reaction sequences can properly achieve the transformation below?  (I)
• 3. Which of the following describes the relationship between the following two structures? (A) ident
• 22. Which of the following is not prominent in the mass spectum of 2-methy1-2-butanol?(A)M-12 (B) M-
• 23. Which of the following compound is the most reactive toward nucleophilic ar sromatic substitutio
• 第26至50題每題2.5分Use the five amino acids labelled as a-e in the table below to answer the questions 26~
• 24. Which of the follwoing molecules would not be considered a bicyclic molecule?(A) (B) (C) (D)
• 2. Which of the following formulas would be a carbohydrate?(A) C3H6N2O4 (B) (C) (D)
• 20.標註文字周圍需畫一方框時，需於「標註設定」對話框中選取下列何項設定？(A)主要單位 (B)對照單位 (C)公差 (D)文字
• 21.若要將目前座標系統 UCS 回到 WCS，可執行下列哪項 UCS 指令？(A) V (B) W (C) E (D) R
• 22. AutoCAD 系統內定以何方向為正角度之方向？(A)順時針 (B)逆時針 (C)極座標 (D)相對座標【圖 2】【圖 3】A B【圖 4】A【圖 5】【圖 9】BA【圖 14】【圖 16】【
• 23.欲以目前所設定的圖紙大小為圖形之出圖範圍，應選擇下列何種指令？(A)顯示 (B)視窗 (C)視圖 (D)圖面範圍
• 24. AutoCAD 系統中所用的滑鼠屬於下列何者？(A)記憶單元 (B)控制單元 (C)輸入單元 (D)輸出單元
• 25.評量噴墨繪圖機之輸出品質其單位為何？(A) rpm (B) ppm (C) cpi (D) dpi
• 26.幾何公差中，同心度符號為下列何者？(A) (B) (C) (D)
• 38. 人類的生存離不開空氣，附圖為乾燥空氣（不含水氣）組成成分示意圖，請問下列有關空氣的敘述何者正確？ (A)乙、丙、丁均為純物質　(B)丁氣體不易發生反應，屬於鈍氣　(C)點燃的線香在乙氣體中會燃
• 4. Which of the following functional group classifications do not contain oxygen?(A)ether (B)thiol (
• 【題組】27. Which amino acid in the above table strongly absorbs UV at 280 nin?(A) Amino acid a (B) Amin
• 【題組】28. Which amino acid in the above table is frequently used as a general base to help catalyze pr
• 5. How many constitutional isomers are there with the molecular formula ?(A)3 (B)4 (C)5 (D)6(E)8
• 12. Assuming a single cross-over event, the completion of meiosis produces________.(A)three daughter
• 13. Pairs of alleles are found at a particular_______ on a pair of_______. (A)gene: gametes(B)base；
• 14. A___ individual is always part of a testcross.(A)heterozygous(B)homozygous recessive(C)homozygou
• 15. A parent has a genotype of RrPy, What is the probability of this individual producing agamete wi
• 16. Your father is heterozygous for a recessive disorder. You know your mother has two"good&quo
• 17. Mouse pigmentation is subject to epistasis of the B alleles by the d alleles. B (black) isdomina