資訊推薦

• 41.有一長 6 m 的簡支樑，樑上受 200 N/m 的均佈荷重，請求樑中點之彎矩值是多少 N-m？(A) 0 (B) 600 (C) 900 (D) 1800
• 42.當樑的斷面形狀與尺寸皆固定時，有關危險斷面之敘述，下列何者正確？(A)可以單獨由剪力圖中觀察出來 (B)可以單獨由彎矩圖中觀察出來(C)剪力與彎矩圖需同時使用才可得知 (D)無法從剪力與彎矩圖得
• 43.有一斷面寬及高為 8 cm x 12 cm 的樑，倘若此斷面受 300N-m 的彎矩，請問中立軸上方 3 cm 處的彎曲應力大小為多少 MPa？(A) 0.78125 (B) 1.171875
• 44.有一斷面寬及高為 6 cm x 10 cm 的樑，倘若此斷面受 100 N 的剪力，請問中立軸上方 1 cm 處的剪應力大小為多少 MPa？(A) 2.4*10-2 (B) 1.6*10-2 (
• 45.有關應力-應變圖之敘述，下列何者錯誤？(A)在彈性極限內應力與應變成正比 (B)超過降服點，材料將產生塑性變形(C)應變硬化區間時，負荷增大後會繼續變形，但應力與應變間已無線性關係(D)頸縮現象
• 46.有一中空的方柱，外邊長為 50 mm、內邊長為 30 mm，長度為 1 m 且彈性係數 E=200 GPa，若承受400 kN 的軸向壓力作用，請問其變形量為多少 mm？(A) 0.8 (B)
• 47.如【圖 47】所示，重 80 N 的物體放置於水平面上，物體與水平面的摩擦係數為 μs=0.7、μk=0.5，若 F=150 N，請求其摩擦力約為多少 N？ (A) 56 (B) 77.5(C)
• 48.下列敘述何者錯誤？(A)重心位置可以利用力矩原理求得 (B)重心的位置一定在物體的對稱軸上(C)半徑為 r 的半圓弧線重心，距離圓心 2r/π (D)若物體在均勻重力場時，質心與重心共點
• 49.如【圖 49】所示，請求該面積對其水平形心軸之慣性矩？ (A) 60.75(B) 74.25(C) 243(D) 256.5
• 50.一斷面為 12cm x 12cm 的外伸樑，同時承受一張力 600N 與一向上彎矩 36N-m，請問此外伸樑斷面底邊所受的應力為多少 N/cm2？(A) -8.33 (B) 4.17 (C) 1
• 1. 機關欲檢查其電子招標上傳之標案是否成功，招標機關必須於檢查過程中提供下列哪一種檔案，方可進行檢查作業： (A)招標上傳之電子憑據檔(.tkn)。 (B)招標上傳之結構檔(.str)。 (C)安全
• 1. 下列敘述，何者錯誤？ (A)機關辦理評選，得於招標文件規定過半數出席評選委員評定總分未達若干分者，為不合格廠商。 (B)機關得於招標文件載明預算未完成立法程序前，得先辦理保留決標，俟預算通過後始
• 1. 依採購法規定，機關得允許廠商於開標前補正非契約必要之點之文件。但應於招標文件中預為明定。(A)O(B)X
• 2. Many major news stations have been _____ the presidential debates live on the evening news.(A) te
• 3. _____ from working overtime for three days, Justin slept for almost twelve hours.(A) Lingered (B)
• 4. Due to global warming, many natural disasters have become more _____ and have resulted in moredam
• 5. Forgetting to have his coat with him, the man _____ in the heavy snow while waiting for the bus.(
• 6. The parcel was mailed last Monday. It _____ arrived last week, but we haven’t received it until n
• 7. The airline tickets are non-exchangeable; they cannot be _____ for cash, but you may be able to a
• 8. Kevin had to work extra hours in order to pay the monthly_____ for his new car.(A) belongings (B)
• 9. You _____ clean your teeth twice a day to avoid tooth cavity or other problems.(A) rather (B) do
• 10. The company says the package was mailed two weeks ago but it _____ hasn’t arrived.(A) yet (B) st
• 11. My daughter loves curry as much as her father _____.(A) is (B) will (C) do (D) does
• 12. _____ the disease is highly contagious, the government has advised the public to take cautions t
• 13. The principal _____ with Tim’s parents for more than half an hour. Tim is now feeling very worri