自然科學 大學 約3年以前 想請問懂微生物的大大~空白和打星號的題目🙏 9 1. (0)目前最小,構造最簡單之微小生物為(A)細菌(B)乳酸菌(C)徵菌(D)病 毒2. (b)微生物之大小約為(A)1-10mm (B)1-10um (C)1-10mm (D)1-10m 3. (D)下列何者非真菌類(A)酵母菌(B)靈芝(C)徵菌(D)乳酸菌 4. (b )下列何者非真核生物(A)酵母菌(B)人類(C)大腸桿菌(D)靈芝 5. (b)生物之五界不包括(A)動物界(B)細菌界(C)植物界(D)真菌界(E)原生生 物界 1. D)下列哪一位科學家用自製之國微鏡觀察生物?(A)李斯特(B)李文霍克 (C)巴斯德(D)柯霍 2. (b)“腐肉生姐”之論述屬於(A)生源論(B)自然發生說(C)進化論(D)生命 來自另一生命物質 3. (C)吃細菌之病毒稱為(A)AIDS 病毒(B)菌病毒(C)嗜菌體(D)濾過性病毒 4. (C)存在大腸桿菌中,且常被用來執行基因工程之一圓形小的DNA),叫做 (A)擬核區(B)染色體(C)質體(D)基因 5. (C)下列哪一位科學家提出生源論?(A)虎克(B)李文霍克(C)巴斯德(D)柯霍 1. (b)英國科學家佛萊明研究金黃色葡萄球菌時受徽菌污染因而發現何種抗生 素(A) streptomycin (B) penicillin (C) tetracycline (D) erythromycin 2. (2)英國科學家佛萊明研究哪種微生物時因時受徽菌污染因而發現抗生素 (A)大腸桿菌(B)酵母菌(C)病毒(D)金黃色葡萄球菌 1. (V ) 下列哪一位科學家建立疾病的細菌根源說?(A)虎克(B)李文霍克(C)巴 斯德(D)柯霍 2. (2)微生物之科學命名包括”屬名”及(A)真名(B)科名(C)株名(D)種名 3. (0 DDNA 雙螺旋結構是由科學家Watson 與下列何者所發表?(A)Pasteur (B) Koch (C) Fleming (D) Crick 4. (C)吃細菌之病毒稱為(A)AIDS 病毒(B)菌病毒(C)嗜菌體(D)濾過性病毒 5.(C)存在大腸桿菌中,且常被用來執行基因工程之一圓形小的 DNA,叫做 (A)擬核區(B)染色體(C)質體(D)基因 (C)1. (10X 接目鏡與 400接物鏡下觀察菌體放大倍數為多少倍?(A)40 (B)100 (C)400 (D)1000 (b)2. 何種顯微鏡使用可見光當照明源,標本呈現在亮背景中?(A)暗視野顯 微鏡(B)亮視野顯微鏡(C)螢光顯微鏡(D)以上皆非 (*)1. 大腸桿菌之革蘭氏染色結果為(A)粉紅色(B)黃色(C)藍紫色(D)黑色 (四)2. 有外膜的細菌屬於(A) 革蘭氏陽性菌(B)革蘭氏陰性菌(C)酵母菌(D)徵 菌·革蘭氏染色時依序需要哪四種試劑處理? (B)1.下列哪一種細菌之超微結構不在細胞壁外面(A)鞭毛(B)細胞膜(C)線毛 (D)夾膜 (C)1.下列對原核細胞與真核細胞之描述何者為非?(A)原核細胞無細胞核(B) 真核細胞有細胞壁(C)原核細胞沒有細胞壁(D)真核細胞含細胞核 次 尚未解決 回答數: 0
自然科學 大學 約3年以前 救人一命勝造七級浮屠 2.2 A batch of 100g of Na2SO4 is dissolved in 200g of H20 and the solution is cooled until 100g of Na2SO4:10H20 is crystallized out. Please do a DOF analysis and calculate the composition of the remaining solution. (Na2SO4·10 H2O = 322.2, Na2SO4=142.05) Answer: DOF = 0; Na2SO4 28%, H20 72% = 待回答 回答數: 0
自然科學 大學 約3年以前 有人知道圈起來的地方的意思是 AgI質量乘 142/233=新生成的AgCl質量嗎? 所以這一串式子是原本的AgCl質量再加上後面進行反應新生成的AgCl質量嗎? 4-17. A 0.6407-g sample containing chloride and io- dide ions gave a silver halide precipitate weigh- ing 0.4430 g. This precipitate was then strongly heated in a stream of Cl2 gas to convert the Agi to AgCl; on completion of this treatment, the precipitate weighed 0.3181 g. Calculate the per- centage of chloride and iodide in the sample. 待回答 回答數: 0
自然科學 大學 約3年以前 大學普化 方智化學第六題 ow Na k 7 CI o se Br Chapter 2 化學鍵結 AH -C=CH 升二技插大 3. Brigma The bond between the carbon atoms in acetylene (HCCH) consists of ) (A)6 pi electrons (B)4 pi and 2 sigma electrons (C)6 sigma electrons (D)2 pi and 4 sigma electrons (E)3 pi and 3 sigma B) B 7.(BCDE) electrons. 【84 成大化學) 14.(B) 20.(C) 4. E ) (A)NO; [83 中興A] Which of the following has a triple bond? (B)O2 (C)C12 (D)CO; (E)CN-. Which one of the following element pairs has the lowest electronegativity (B) 27.(D) 34. (C) C) 41.(CD) 1 G difference and thereby is the least polan? Få 10 323.49 B) (84 5% *ILI) -) 48. (A) 6. NET 2 > 2 D) 58. (D) 62. (B) 69. NO+ D Obind (219) O 发 (A)SeF (B)Seci (QKBr (D/NaCl (E)KAT. 11 The compound Sio does not exist as a discrete molecule while CO2 does. This can be explained because ly 2 ep 3 15 aly zp (A)the Si–O bond is unstable (B)The Lewis structure of SiO has an even number of electrons (C)The SiO2 is a solid while CO, is a gas (D)the 3p orbital of the Si has little overlap with the 2p of the 0 (E)none of the these. V MOJT 515 1 - 4 40 (成大】 Yi (4 0 atom) (86 58*A] 7. In order to explain the valence observed for many of the elements 0 -Si-O in terms of electron configurations, it is often useful to look at electronis staies slightly different from the ground state in comparing 0-41-0 the ground state of boron with the state more useful to describe 0 bonding, the number of unpaired electrons goes from (A)1 to 2 (B)1 to 3 (C)3 to 4 (D)3 to 5 (E)none of the above. (集 (80 清大B) Which of the following compounds should not exist? ( (, 【85 成大A】 alf 566-32 Cle 32-8-24 2-89 cild 14 1 he atoms 83 中興A) mm bove. B 29 p. 1 1 be a ) \CHE > ? (A)Na,P (B)(NH4),PO, CIPO. DPH xH)POCI,, Maspal sput 中興A] Pa zorgt O 15412 = 1) O-P- 5 5+12= 1) 10-4 - 13 13-12=1 -- cl-P-0 待回答 回答數: 0
自然科學 大學 3年以上以前 想問第6-29題怎麼算🙏 Rg = 10M2 圖 E64 習題6-27 28 , 6-28 若上題中,改用 Vascoff) = -4.5 V · Ipss = 9 mA Z MOSFET 求其偏壓值 Ipo 和 VpsQ = o - 6-29 如圖 E6-5 所示,若MOSFE 之Vestoji) = -3 V, Ipss = 6 m4。 試求ID、Les 和Ins。 待回答 回答數: 0
自然科學 大學 3年以上以前 熱力學 -> 3. = The element oxygen was prepared by heating mero ercury(II) oxide: HgO(s) Hg(1) + (1/2)O2(g), AH 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions. The entropies of Hg, O2 and HgO are 76.02, 205.0 and 70.29 J/Kºmol, respectively. (A) 108 K, (B) 430 K, (C) 620 K, (D) 775 K, (E) 840 K. 待回答 回答數: 0
自然科學 大學 3年以上以前 求解 謝謝 The figure shows a three-particle system, with masses mu = 4.2 kg. m2 = 2.8 kg, and m2 = 7.3 kg. What are (a) the x coordinate and (b) the y coordinate of the system's center of mass? 13 2 1 x (m) 待回答 回答數: 0
自然科學 大學 3年以上以前 水文學——降水與損失 如圖,請問有人知道這兩題該怎麼算嗎? 翻遍教科書教過的內容根本沒想法⋯ > 0 2-14 有一矩形集水區,其四個角落的座標分別為(0,0),(0,10), (14,10) 和 (14,0)。集水區內設有四個雨雨量測站,各測站所在位置的座標及降雨量如下 表。所有座標值的單位均為公里。試以徐昇氏法推算此集水區的平均降雨量 及逕流總體積(註:假設無任何降雨損失) o 雨量站位更 (4,2) (4,7) (11 , 7) | (11,2) 降雨量(cm) 1.5 2.0 2.4 4.3 ( 86 水利工程簡任升等) 待回答 回答數: 0
自然科學 大學 3年以上以前 光學第3題(2.38)請問如何解選項c🙏 3.00 85 09:49 ul. RES Optics Homework 1...748220677e2a.pdf ka KI : 。 Optics Homework 1 1. 2.2* Show that the function $(y, t) = (y – 40) is a solution of the differential wave equation. In what direction does it travel? 2. 2.6 How many wavelengths of a green laser (1 = 532 nm) can fit into a distance equal to the thickness of a human hair (100 um)? How far will the same number of waves extend if they originate from a micro- wave oven (v = 2.45 GHz)? 3. 2.38 Which of the following expressions correspond to traveling waves? For each of those, what is the speed of the wave? The quanti- ties a, b, and c are positive constants. (a) (z, t) = (az – bt)? (b) y(x, t) = (ax + bt + c)2 (c) 4(x, t) = 1/(ar? + b) 4. 2.43 Write an expression for the wave shown in Fig. P.2.43. Find its wavelength, velocity, frequency, and period, Figure P.2.43 A harmonic wave. I=0 40 100 300 500 -20 401 -60 0.66 X 10-15 (nm) 100 300 500 I = 1.33 X 10-15 (nm) o 二 待回答 回答數: 0