問題詳情
72. 下圖所示電路中，下列敘述何者正確？ 
(A)二極體功能為整流
(B)二極體可消除線圈上之反電勢
(C)電晶體用途為21開關
(D)電晶體用途為放大器。
(A)二極體功能為整流
(B)二極體可消除線圈上之反電勢
(C)電晶體用途為21開關
(D)電晶體用途為放大器。
參考答案
答案：B,C
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- ⑸毒氣偵檢器中任一組件所含鋂-241 之活度為多少？
- 二、有一絕熱之活塞-汽缸裝置，此活塞可自由在汽缸內移動。其原先內裝有體積 300公升，壓力 120 kPa、溫度 17℃之空氣。當此空氣被一置於汽缸內的 200 W 電熱器加熱持續達 15 分鐘後，試
- <C>The Luncheon is a well-known short story by Maugham, in which he describes a poor young man
- 二、令線性轉換 L：R2→R3 定義為 L，R 為實數集合，請問是否在值域內？（20 分）
- (A) get…to repeat (B) make…repeat (C) find…repeating (D) have… repeat
- ⑵總括熱傳係數（overall heat transfer coefficient）及對數平均溫度差（log-meantemperature difference）
- ⑸吸收式與壓縮式冷凍機（absorption and vapor compression refrigeration system）之優劣點之比較
- (A) Thanks to (B) In addition to (C) In spite of (D) As a result,
- The man was severely injured in last weekend’s tragic car accident and died ______ afterwards.(A
- (A) is used to selling (B) is used to sell (C) used to sell (D) has used to sell
內容推薦
- (A) whatever (B) what (C) which (D) whether
- <E>The Bermuda Triangle is a triangular area between Bermuda, Florida, and Puerto Rico in the
- (A) convinced (B) assured (C) relieved (D) reminded
- (A) resulted in (B) resulted from (C) caused by (D) ironed out
- (A) after (B) since (C) until (D) from
- (A) so that (B) that (C) ,where (D) to which
- (A) held onto (B) led to (C) recovered from (D) thought up
- 14 下列那一個化合物在酸性條件下水解會得到醛類化合物？
- (A) and its (B) and that its (C) of which (D) whose
- ⑵若壓縮效率為 0.9，試求所需要的額外壓縮功。（5 分）
- (A) Besides (B) Therefore (C) Instead (D) NeverthelessIV. Reading Comprehension 20 %
- Enalapril通常做成何種鹽類？(A)HCl (B)H3PO4 (C)Maleate (D)Oxalate
- Judging from the information provided in the article, what does the word cannibalism mean?(A
- <A>What do you consider to be the most important invention in the last 1,000 years? Is it the
- 蛋白質藥pramlintide是將amylin之胺基酸序列的那些位置以脯氨酸（proline）置換而得？(A)25, 26, 27 (B)25, 26, 28 (C)25, 27, 28 (D)
- Subway is a fast food chain store that mainly sells s e sandwiches and salads.
- Which of the following descriptions about present-day Easter Island is NOT TRUE?(A) It is no
- 1有關車載網路系統使用 CAN 的敘述，下列何者錯誤？(A)可使佈線簡單化，降低成本(B)減少感知器數量，實現訊息資源共享(C)提升車輛整體運作的可靠性(D)可簡化維修儀器，僅使用數位電錶即可
- According to the article, whose invention is the printing press?(A) The Chinese.(B) A German
- 四、有一內含 1 kg O2 的絕熱容器，溫度 15℃，壓力 300 kPa。以一閘閥連接另一內含N2，體積 2 m3 的非絕熱容器，溫度 50℃，壓力 500 kPa。當閥打開後兩氣體混合成一 25
- It is commonly believed that eating fruits after meals is good for d n. It may help to change foo
- 三、假設要以一台性能係數（Coefficient of performance）為 6 的冷凍機將 10 kg 的水由30℃冷卻到 5℃，已知該冷凍機的功率輸入為 500 W，而水的比熱為 1
- The g n gap appears when older and younger people do not understand each other because of theird
- What may the printing press have helped to create directly?(A) A large group of powerful rea
- After suffering successive defeats, Roger Federer was ex y happy when he won French Open on June