資訊推薦

• 20. 以下關於雷射切割的敘述，何者錯誤?
(A) 回火原因可能是混合氣體從噴嘴孔內噴出的速度小於混合氣體的燃燒速度 (B) 雷射刀頭的機械部分與切割物件無接觸，不會對表面造成刮傷
(C) 固體雷射(
• 1.如圖所示，在牆角邊有一根質量為m的均勻繩，一端懸於天花板上的A點，另一端懸於鉛直牆壁上的B點，平衡後最低點為C，繩長，且繩在B點的切線與鉛直牆成a角，則繩在A處的張力為多少？
• 50. 如附圖所示，在 Python 語言中，可以使用 assert 進行斷言測試，請問附圖陳述句的測試效果，下列敘述哪一項正確？ (A) 當 one 與 two 不相等或 one 與 three 不
• 27. 如下圖所示電路，開關S接通並達穩態，在t = 0時再將開關S打開，則在開關 S打開後之瞬間I， 值各為多少？ (A) I = 4A，IL = 5A，IC = 4A，VC =25V，VL =32
• 壹、作文題：題目：敬業。
• 9. 兩個電感 L1 = 12 mH、 L2 = 8 mH 串聯，且兩個電感之間無互感效應，若流過電感的直流電流為20A，則此兩個電感的總儲存能量為多少焦耳？(A) 2 (B) 3 (C) 4 (D)
• 10. 電阻與電容串聯電路，電阻為2 kΩ，電容為25μF，此電路的時間常數為何？(A) 12.5ms (B) 25ms (C) 50ms (D) 100ms
• 11. 兩個電壓時間函數v1(t)與v2(t)，若v1(t)的相位超前v2(t)為60 °，則下列何者正確？(A) v1 (t)=20 sin ( 314t–30 °)V、v2 (t)=20cos(3
• 2. The nucleolus in a cell nucleus is the site of(A)chromosome replication(B)uncoiling chromosomes(C
• 4. During glycolysis, how many net ATP molecule(s) does a molecule of glucose can generate? (A)0 (B)
• 3. What do we usually call the reactant in an enzyme-catalyzed reaction?(A)substrate(B)catalyst (C)c
• 6. What step in plant photosynthesis occurs the splitting of water and the generation of oxygen?(A)P
• 5. What step in cellular respiration occurs in the cytoplasm of eukaryotic cells?(A)Glycolysis(B)ATP
• 9. The cell surface receptors that can act only indirectly on plasma membrane-bound enzymes or ionch
• 7.What molecule is the electron donor for the light dependent reaction in plant photosynthesis?(A)ca
• 11 . There are 24 sister chromatids in a normal somatic cell. How many chromosomes are there?(A)8 (B
• 10. What enzyme phosphorylates MAP kinase?(A)MAP(B)MAP kinase (C)MAP kinase kinase((D)MAP phosphatas
• 8. Which type of plant can utilize the Calvin cycle?(A)C3 plants(B)C4 plants(C)CAM plants (D)C3, C4,
• 12.Which structures demonstrate the sites of crossing over?(A)chiasmata(B)centromeres(C)kinetochores
• 13.How many Barr bodies can be found in a diploid cell from a normal human female? (A)0 (B)1 (C)2(D)
• 16. Micro RNA (miRNA)can regulate gene expression by binding directly to(A)mRNA to prevent transcrip
• 15. If eukaryotic mRNA molecules contain non-coding sequences that can be removed before translation
• 14. During DNA replication, which enzyme removes the RNA primers and fills in the gap?(A)DNA pol I(B
• 17. There are two distinct domains for specific transcription factors in eukaryotes and they are(A)a
• 22. Some flowering plants show disassortative mating by preventing self-pollination and it increases