資訊推薦

• 12.單晶片控制器中經常使用 PWM(Pulse Width Modulation)訊號來控制直流馬達的轉速，請問下列對 PWM 訊號控制的描述不正確？(A) 訊號是一種方波的形式(B) 少數的類比訊
• 13.在四連桿機構中，若搖桿+連心線 ＞ 曲柄+浮桿，可成為(A) 曲柄搖桿機構(B) 雙搖桿機構(C) 雙曲柄機構(D) 牽桿機構
• 14.下列何者不是錫銲時使用銲劑的目的？(A) 除去材料表面氧化物及油漬(B) 防止因銲接 高溫而產生新的氧化物質(C) 使熔融的填料容易滲入銲接縫(D) 增加熔融銲錫的表面張力，以利銲錫球的產生
• 15.某一個四環電阻，色碼電阻色環為紅色、藍色、紫色、金色，則電阻值為？(A) 620MΩ±10%(B) 260MΩ±5%(C) 26MΩ±5%(D) 620MΩ±20%
• 16.「將大量資料進行分類，經由整理、分析或統計後；再藉由團隊分組腦力激盪、排列組合的過程，並提出多個具體可用的解決方法」是工程設計的流程哪一個步驟？(A) 界定問題(B) 預測分析(C) 發展方案(
• 17.下列電子元件中有幾項為主動元件？ (a)電阻、(b)電容、(c)電感、(d)稽納二極體。(A) 1(B) 2(C) 3(D) 4
• 18.市售 3D 印表機用來移動列印噴頭或列印工件，所使用馬達多為何種馬達？(A) TT 馬達(B) 步進馬達(C) 伺服馬達(D) 交流馬達
• 19.有一具 5kW、5 人份之儲熱式電熱水器，平均每日熱水器所需加熱時間為 30 分鐘。若電力公司電費為每度 2.5 元，則每人份每月（30 日）平均之熱水器電費為何？(A) 187.5 元(B)
• 20.Arduino 語句 analogWrite（3,255），執行的結果是 Arduino 板接腳 3等效輸出的電壓是？(A) 0V(B) 0~1.5V(C) 3.5~5V(D) 5V
• 7. 如圖所示將四顆相同之鋼球緊密堆放於桌上，底部三顆球相互緊靠，並於上方放置第四顆球，請問要能達到穩定的平衡，則球與球之間的摩擦係數μ1，以及球與桌面的摩擦係數μ2須滿足甚麼條件？ (16 分)
• 2. ( ) ________ you have made minimal progress, it is by no means the kind of progress that you need
• 3. ( ) The central meaning or dominant message an author is trying to convey is called(A) stanza (B)
• 4. ( ) "Hissed," "Crackle," and "Splash" are all examples of(A) assona
• 5. ( ) The venture is _______ to increase revenue by 30% by the end of the season.(A) endeavoring (B
• 6. ( ) Roses represent romance. The color red represents passion war.This is an example of:(A) allit
• 7. ( ) An influential panel of experts says that all kids ages eight to eighteen should be _________
• 8. ( ) Before ______ the helm, the dictator still did whatever he could to cleanse the party members
• 9. ( ) 2046 is a sequel to In the Mood for Love, set in Hong Kong in 1962, concerned the ______ affa
• 10. ( ) After some athletes win the Olympics, they usually expect to turn their sporting ______ into
• 11. ( ) If I ________ the choice of making either an oral or a written report, I ________ the second
• 12. ( ) The neutral mutation rate is known ________ widely along human chromosomes, ________ to muta
• 13. ( ) The janitor _________ all the works by the time we finish shopping and arrive. home.(A) will
• 14. ( ) All of _________ items will be sent to the lost and found and wait for their owners to take
• 15. ( ) Starbucks Café increased its monthly profits ________ 20 percent after advertising online.(A
• 【題組】(c) Find the expression for , and state the domain of .