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114年 - 114 臺北自來水事業處及所屬工程總隊新進職員(工)甄試_共同科目:自來水法規#137500(15題)

114年 - 114 臺北自來水事業處及所屬工程總隊新進職員(工)甄試_共同科目:國文(作文)#137499(1題)

114年 - 114 臺北自來水事業處及所屬工程總隊新進職員(工)甄試_土木工程_四級工程師:土木工程#137496(40題)

114年 - 114 臺北自來水事業處及所屬工程總隊新進職員(工)甄試_土木工程_四級工程師:自來水工程#137491(50題)

114年 - 114 國營臺灣鐵路股份有限公司_資產開發處、附業營運處、北區營運處從業人員聯合甄試_第 10 階-助理事務員-事務管理_專業科目一:事務管理大意#137448(50題)

114年 - 114 國營臺灣鐵路股份有限公司_資產開發處、附業營運處、北區營運處_從業人員聯合甄試_第 10 階-助理事務員/事務管理_專業科目二:行政法大意#137447(50題)

114年 - 114 關務人員考試_三等_財稅行政、關稅法務、關稅會計、關稅統計、資訊處理、機械工程、電機工程、化學工程、紡織工程、輻射安全技術工程、藥事(選試英文):外國文(英文)#137433(27題)

114年 - 114 教育部自學進修專科學校學力鑑定考試試題_美容造型設計:職場衛生與安全#137378(50題)

114年 - 114 教育部自學進修專科學校學力鑑定考試試題_商業設計、室內設計、工業設計 :基本設計#137377(50題)

114年 - 114 教育部自學進修專科學校學力鑑定考試試題_機械工程、造船工程、工業工程、紡織工程、製鞋技術、機電工程:機械元件設計#137376(50題)

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複選題16. Consider a p-n diode. Which of the following statements are correct? (A) Electrons on the n side and holes on the p side will flow towards each other and recombine until all the carriers are neutralized. (B) When the diode is forward biased, both electron current and hole current will flow in the diode contributing to the overall current. (C) When the diode is reverse biased, the current in the diode is essentially negligible if there is any. (D) A good quality diode can be easily formed by mechanically compressing p- and n- type semiconductors into close contact. (E) All of the above.

複選題15. Consider energy bands in a crystal. Which of the following statements are correct? (A) The conduction band of a metal is partially filled by electrons. (B) Existence of energy gap is a manifestation of quantum mechanical phenomenon. (C) Intrinsic semiconductors cannot conduct electricity at all even at high temperatures. (D) Doped semiconductors can conduct electricity primarily with the carriers in the conduction band or holes in the valence band. (E) All of the above. 注

複選題14. You want to calculate electron waves 4(x) in a thin wire (1-dimensional). What if the potential outside the wire were infinite? Which of the following statements are correct in this scenario? (A) The allowed kinetic energies of electrons should be quantized. (B) (x) 0 everywhere000 eV (C) (x) ≈0 everywhere, except for 0<x<L. 이 L (D)y(x) = 0 everywhere, except for 0<x<L (E) Can't tell anything yet. Need to find y(x) first. mathematically V(x) = ∞ for x<0 and x>L V(x) = 0 eV for 0>x<L

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