問題詳情
1.有一台起重機，吊起750Kg的貨物升高0.1m需要出力20Kg，且需要將纜繩下拉5公尺，則這台起重機的機械效率為
(A)80%
(B)75%
(C)70%
(D) 65%。
(A)80%
(B)75%
(C)70%
(D) 65%。
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- 三、試依我國中央總會計制度規定，就下列會計事項作成分錄：（20 分）（一）總預算公布成立，歲入預算數$4,500,000,000、歲出預算數$4,850,000,000，歲入歲出差短$350,000,
- The word "spanning" in line 18 is closestin meaning to(A) covering(B) selecting(C)
- (A) whereby(B) what(C) whether(D) whereas
- The passage suggests that a geographer would consider a city’s soil type part of its(A) hint
- The word "undergone" in line 7 is closest in meaning to(A) led to(B) transformed(C
- The word “them” in line 11 refers to(A) Americans of European descent(B) paintings(C) Africa
- More and more companies are planning to ________ a standard of excellenceamong their employees.(A
- Joseph always leaves the football stadium early to avoid the ________ that occurswhen the games
- The word "outbreak" in line 6 is closest in meaning to(A) cause(B) beginning(C) po
- What can be inferred about the diversions of the early settlers of the United States?(A) They
內容推薦
- The word “ingenuity” in line is closest in meaning to(A) wealth(B) resourcefulness(C) tra
- According to the passage, before the American Revolution the main task of limners was to(A)
- 二、下列各項為獨立情況，請依要求作答，並列示計算過程：（一）某地方政府成立債務基金，辦理分期償付債券之債務還本付息事項，並以房屋稅為主要還款財源。96 年初該基金平衡表之各科目餘額為「現金」$
- The word “insignificant” in line 16 is closest in meaning to(A) unimportant(B) undisturbed(C
- According to the passage, African Americanartists of the 1920’s differed from earlierAfrican
- Ｙ型接線之壓縮機，其線電流為 25A，則其相電流為(A) 1 8 (B) 2 5 (C) 3 9 (D) 2 A。
- According to paragraph 4, which of thefollowing aspects of the plover'sbehavior gives t
- The word” sustain” in line 6 is closets in meaning to(A) select(B) strain(C) support(D) stor
- 三台離心式冰水區域水泵並聯之系統，在部份負載時，其中兩部水泵停止運轉，在未設置自動節流元件之情況下，唯一運轉之水泵，其運轉電流會：(A)升 高(B)降 低(C)不 變(D)不一定。
- The Pomo people used each of the following materials to decorate baskets EXCEPT(A) shells(B)
- It can be inferred from the passage that artists who were trained in England(A) considered a
- The word "fashion" in line 2 is closest in meaning to(A) maintain(B) organize(C) tr
- Questions 18-28Cities develop as a result of functions that they can perform. Some functions resultd
- The word “urged” in line 17 is closest inmeaning to(A) prepared(B) defined(C) permitted(D) en
- (A) Thus(B) In short(C) Little by little(D) On the other hand
- The word "consorted" in line 15 is closest in meaning to(A) made decisions(B) stud
- The author mentions the prickly pear (line 12)as an example of(A) valuable fruit-bearing pla
- Questions 41-50In taking ups new life across the Atlantic, the early European settlers of the United
- (A) disruptive(B) supportive(C) restrictive(D) impulsive
- The word "sufficient" in line 16 is closest in meaning to(A) adequate(B) temporary
- The task of feeding larvae is mentioned in thepassage to demonstrate(A) the advantages of sp
- According to the passage, one thing eusocialinsects can do is rapidly switch from(A) one typ
- According to the passage, artists such as Copley, West and Peal signed their paintings(A) in
- The word "pursue" in line 24 is closest inmeaning to(A) catch(B) notice(C) defend(
- The author suggests that human standards of beauty are(A) tolerant(B) idealistic(C) defensib