資訊推薦

• 72. 壓力表必須儘量在________℃以下測量，故測量蒸汽壓力需加裝虹吸管。(A)45(B)100(C)65(D)20
• 73. 1\/4 OD×9\/16 R 其中 9\/16 R 表示(A)彎管長度(B)管內徑(C)管外徑(D)彎管內徑。
• 74. PVC 導管之管徑，下列那一種找不到(A)3\/4\"(B)1\/2\"(C)1\"(D)5\/8\"
• 75. 安裝避雷器時至少需距地面多少公尺以上？(A)1 公尺(B)2 公尺(C)2.5 公尺(D)1. 5 公尺。
• 76. 空氣管線含油不利於(A)閘閥(B)氣缸驅動器(C)壓力指示計(D)傳送器。
• 複選題13. 下列關於此四類有機化合物的敘述，哪些正確 ？ (A) A1與 B1為同系物 (B) A1、 B1、 C1、 D1四 種 化 合 物 在 氣 態 時 ， 以 A1較 接 近 理 想 氣 體
• 複選題14. C3 化合物的各種同分異構物中， 下 列 哪 些 官 能 基 可 能 存 在 ？ (A) 羥 基 (B) 羰 基 (C) 羧 基 (D) 炔 (E) 醚
• 複選題15. 碳酸鈣固體溶於水為一放熱反應。下 列 甲、乙、丙 三 種 圖 形 分 別 代 表 碳酸 鈣固體在水中溶解量與施加變因的關係圖。下列相關變因的敘述，哪些正確？(A) 通 入 二 氧 化 碳
• 16.The coordination geometry of Cr(NO)4 is_____  . (A) tetrahedral (B)trigonal pyramidal(C) see-saw
• 17.What type of hi^h energy bonds are found in ATP and ADP? (A) ca^oxylic anhydride(B) phosphodieste
• 18.Consider the second-order reaction A → products, Mich has a first half-life of 25 s.If the concen
• 19.Which of the following is the reason for minimum chemical interferences in inductively-coupled pl
• 20.The point group of H2O2 is_______  . (A) C2 (B) C2v (C) C3 (D) C3v(E) none of the above
• 21.The C–O bond order of CO_ is_______ . (A)1 (B)1.5 (C)2(D) 2.5 (E) 3
• 22.The reaction A→B + C is known to be zero order in A with a rate constant of 4.8 x 10-2 mol\/L •
• 23.Which of the following statements is\/are true? I. An excited atom can return to its ground stat
• 24.How many electrons can be described by the quantum numbers n = 4, l = 4, ml= 1? (A) 14(B)6(C)10(D
• 25.The concentration of OH- ions in a solution is 5.62 mM. Determine the pH of the solution. (A) 11.
• 26.In which of the following techniques are we measuring the amount of light absorbed as a function
• 27.A gas releases 2.0 J of heat and then performs 11.8 Jof woric. What is the change in the internal
• 28.The pKb of die base cyclohexamine, C6H11NH2, is 3.36. What is the pKa of the conjugate acid, C6H1
• 29.Ellipsometry is commonly used to measure the thickness of films. Which of the following signal is
• 30.Which of the following is not a feature of carrier g^s used in gases chromatogr\/)hy? (A)The car
• 4. Which of the following is a correct Diels-Alder reaction product of the following reaction? (A)(B
• 77. 左圖之逆止閥方向表示(A)(B)(C)(D)