問題詳情
80. 在P型半導體中,導電的多數載子為何者?
(A)電子
(B)原子核
(C)電洞
(D)離子
(A)電子
(B)原子核
(C)電洞
(D)離子
參考答案
無參考答案
內容推薦
- 下列何種檔案系統的單一檔案之大小上限為 4GB?(A)ext 3 (B)ext 2 (C)NTFS (D)FAT32
- 大數據(Big Data)分析方式中,最能夠直觀呈現大數據特點的方法是?(A)可視化分析(Visibility Analysis)(B)預測性分析(Predictive Analysis)(C
- 圖示為游標卡尺量測後之顯示,箭頭標示本尺與副尺吻合線,請問由此可知量測之尺寸為何?(A)65mm (B)0.9mm (C)3mm (D)2mm
- 此符號表示?(A)NPN 晶體 (B)PNP 晶體 (C)UJT 晶體 (D)SCR 晶體
- 下列何者非Arduino圖控軟體?(A)ArduBlock (B)S4A (C)Arduino IDE (D)mblock
- 下列哪種機構可做為慢去快回變換機構?(A)齒條與小齒輪機構 (B)日內瓦機構(C)搖桿與滑塊機構 (D)單向離合器機構
- 木工機械所謂的「切削速度」乃是指?(A)被削材通過刀具的速度 (B)刀具的旋轉速度(C)刀具的圓周速度 (D)刀片數乘以刀具旋轉速度
- Which of the following statement about “gears” is incorrect?(A)The mixer uses a gear mechanism t
- Which of the following mechanism changes the constant speed rotary motion intointermittent recip
- Which of the following mechanism transfers mechanical power from one place toanother in a bicycl
內容推薦
- Acid rain is defined as when the pH value of rain water is below ?(A) 5 (B)
- According to noise control network of Taiwan Environmental Protection Agency,human sleeping qual
- 國中生活科技課程強調動手實作活動,教師應以實作活動為主軸,整合課綱中生活科技學習內容,以使學生能體會科技的本質,善用設計與製作以解決日常生活中的科技問題,進而評估、反思科技與社會的互動關係,請
- A seventh grade student is 168 cm in height and 55 kg in weight. What is the body massindex (BMI
- 對於砂紙的敘述,下列何者錯誤?(A)砂紙分為一般砂紙與耐水砂紙兩種,普通砂紙只適合乾磨,耐水砂紙則是沾水研磨,又稱為濕磨或水磨(B)砂紙的重量會影響到砂紙的可彎曲性、韌性、耐機械性(C)製作砂
- 某校七年級生活科技課程專題「連桿機械手臂」,主要教學目標為協助學生認識機械手臂運作之原理,探討在不同情境下機械手臂與夾具之設計,進而引導學生探索機械手臂於實際產業界的延伸應用,思考科技演進對人
- 下列技術的敘述,何者正確?(A)Bluetooth:近距離無線通訊,是由Philip和Sony聯合開發的一種無線連接技術,使電子設備之間可以實現便捷的短距離通訊(B)NFC:是一種無線通訊技術
- A carbon footprint is the amount of greenhouse gases, primarily carbon dioxide,released into the
- Earth Day is an annual event celebrated around the world to demonstrate support forenvironmental
- 請問近兩年臺北市所舉辦公私立國民中學生活科技創作競賽主題「液壓機械手臂」與「線控車」,若作為國中階段生活科技教學活動時,較適合對應之科技應用主題的學習內容為何?①機構與結構的設計與應用 ②日常
- To prevent infectious diseases, which of the following statements is wrong?(A) Receiving recomme
- The most common cancer occurred in Taiwanese people aged between 25 to 44 is:(A) oral cancer (B)
- Which of the following statements related to interpersonal communication is correct?Choose ap
- Which of the following statements about diet and nutrition in adolescence is wrong?(A) There are
- 電動車其實涵蓋範圍很廣,小至兒童玩具,大到高速鐵路,任何以電力驅動的車輛都可稱為電動車,但我們日常對話討論的其實是指四輪的電動汽車,又可分成三大類。針對此三類電動車的敘述哪些是正確的?① HE
- Which of the following statements is relatively wrong with regard to the plans toimprove persona
- 下列對於動力技術系統的敘述,那些是正確的?①磁懸浮列車是一種靠磁力來推動的列車,由於其軌道的磁力使之懸浮在空中,行進時不需接觸地面,因此其阻力只有空氣的阻力 ②動力集中式列車是鐵路運輸中以傳統
- 下列對鐵路優缺點的敘述,那些是正確的?①運量大、運價低廉且運送距離長②編組費時 ③污染性較低 ④受氣候影響大 ⑤營運具彈性 ⑥行駛具自動控制性⑦設施龐大不易維修,且戰時容易遭致破壞(A)①③⑤
- Which of the following statements about menstruation is wrong?(A) Duration of Menstrual bleeding
- Which of the following is not common source of stressors in adolescence?(A) Major changes in lif
- It is important to improve one's ability to cope stress. Which of the following is not agoo
- Which of the following statements about body fat is wrong?(A) The body fat percentage is one of
- Which of the following statements about lovelorn is correct?(A) Breaking up is the other’s probl
- Which of the following statements about sexual transmitted diseases is wrong?(A) If you have a s
- The opening of the App Store was a _____, turning handsets from simply being phones into the hand