資訊推薦

• 70. The value of the Bohr radius for hydrogen is:(A)0.529 x 10-6cm(B) 0.529 x 10-8cm(C) 0.529 x 10-1
• 2.e = 30 sin(ωt + 300)，i = 10 sin(ωt + 300)，(A)e 超前 i 600，(B) e 超前 i 300 ，(C) e、i 同相，(D) e、i 異相。
• 3. D頻率為 f=週/秒，則其角速度為(A)1/(2πf)，(B) (πf)/2，(C) πf，(D)2πf。
• 4.高壓配電的構成方式為(A)放射型，(B)網路型，(C)環路型，(D)以上皆是。
• 5.由絕緣器上部金屬零件，經空氣及絕緣器部分表面而至下部金屬零件之最短距離稱為(A)漏洩距離，(B)閃絡距離，(C)電弧距離，(D)補漏距離。
• 6.導線之長度與材料相同，若其電阻減為原來的一半，則(A)其直徑為原來的 2 倍，(B) 其截面積為原來的 2 倍，(C) 其直徑為原來的 1/2 倍，(D) 其截面積為原來的 1/2 倍。
• 7.一馬達之效率為 80%，在 220V，10A 之輸入電流，則其輸出馬力為(A)1760，(B)760，(C)2.36，(D)1.36 馬力。
• 8. 如圖安培計指示為 (A)15A 流出安培計，(B) 15A 流入安培計，(C)13A 流出安培計，(D) 13A 流入安培計(E)一律給分。
• 71 . Select the rate law that corresponds to the data shown for the following reaction:A+B→ Products
• 9.於相同電壓下，R1及 R2兩電阻，接成串聯及接成並聯時之消耗電功率比為(A)(R1R2)/(R1+R2)，(B)(R1+R2)/(R1R2)，(C) (R1+R2)2/(R1R2)，(D) (R1
• 10.如圖 S 開關關上，則 (A)R3無電流，(B)R1之電流不變，(C)R2之電流增加，(D)總電流減少。
• 72. Which one of the following tetrahedral MXF- complexes has the strongest crystal field stabilizat
• 73. Although the peroxide ion, O22-, and the acetylide ion. C22-, have long been known. the diazenid
• 74. Calculate the reduced mass of HF molecule given that the mass of H atom is 1 amu and the mass of
• 75. What factors affect the ionization energy of an atom?(A) Electron shielding(B) Electron configur
• 76. How can we explain the fact that CCl4 is a liquid and CL. is a solid at 25℃? Which of the follow
• 77. How many microstates does a s1d1 electron configuration have?(A)5(B)10 (C)15 (D) 20 (E) 25
• 78. The most probable distribution function for a system of molecules is given by(A) Maxwell-Boltzma
• 79. What is the oxidation state of the terminal nitrogen atom in azide ions?(A)-3 (B)-1 (C)+1 (D) +4
• 80. What is the highest occupied molecular orbital of a C24- ion?(A)σ2s* (B) π2p (C) σ2p(D)π2p*(E) σ
• 81. On the basis of VSEPR, what is the predicted point group for XeO2F2?(A)Ci (B) Cs (C)C2v (D) C4v
• 82. Sort the ions in the order from the largest radius to the smallest radius:(1) Se2- (2) Br- (3) R
• 83. What is the highest molecular orbital degeneracy of cyclic H3+?(A)0(B)1 (C)2 (D)3 (E)4
• 84. Which of the following [M(H2O)o"* complexes reacts the slowest in a water exchange reaction
• 85. How many carbonyI stretching bands could be observed in the IR spectrum of the [Co(CO)3(PPh3)2]+