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複選題25. Which of the following statements correctly describe the IR and vibrational Raman activity of the listed molecules based on vibrational selection rules? (A) CO₂ has both IR-active and Raman-active vibrational modes. (B) H₂O shows IR activity because its vibrations involve changes in dipole moment. (C) N₂ is IR active because it has a symmetric stretch that changes the molecule’s dipole moment. (D) CH₄ doesn’t exhibit Raman-active modes. (E) O₂ is Raman active but IR inactive.

複選題26. Which of the following statements correctly describe the rotational spectral activity of the listed molecules in microwave and rotational Raman spectroscopy, based on selection rules? (A) CH₄ shows rotational P/R branches in microwave spectroscopy because of its symmetric tetrahedral structure. (B) O₂ is both microwave and rotational Raman active because its symmetric stretch changes. (C) HBr is active in microwave spectroscopy because it is a heteronuclear diatomic molecule. (D) N₂ is microwave inactive but rotational Raman active. (E) CO₂ can show rotational Raman spectra but is microwave inactive due to its linear and centrosymmetric structure.

8.下引詩句,都有季節景物的描寫,若依春夏秋冬時序排列,正確的選項是: 甲、接天蓮葉無窮碧, 映日荷花別樣紅。 乙、無情最是臺城柳,依舊煙籠十里堤。 丙、雲橫秦嶺家何在?雪擁藍關馬不前。 丁、停車坐愛楓林晚,霜葉紅於二月花。 (A)乙甲丁丙 (B)甲乙丙丁 (C)丙丁甲乙 (D)丁丙甲乙

43.CYP 酵素與下列何種氣體形成的複合物,於波長 450 nm 處有極大吸收? (A)N2 (B)O2 (C)CO2 (D)CO

1. 某輪船速15節,當船順流2節時,則相對計程儀顯示的航速應為幾節?此時實際船速為幾節? (A)15;12 (B)17;15 (C)17;17 (D)15;15

36. 機關如欲在開標後辦理廢標,須刊登以下哪一個公告? (A)更正公告 (B)決標公告 (C)無法決標公告 (D)定期彙送