資訊推薦

• 44. 有關價電子及自由電子的敘述，下列何者正確？(A)價電子為原子最外層軌道上的質子(B)價電子易受外界能量影響而成為自由電子(C)價電子脫離軌最外層軌道成為自由電子(D)矽的價電子有5個
• 45. 關於基本電學定理的敘述，下列何者錯誤？(A)在應用重疊定理時，移去的電壓源兩端以開路取代(B)根據戴維寧定理，可將一複雜的網路以一個等效電壓源及一個等效電阻串聯來取代(C)節點電壓法是應用克希
• 46. 有關電流的敘述何者正確？(A)就同一導體而言，電子移動速率與外加電壓成正比(B)就同一電流而言，電子移動速率與導體截面積成正比(C)慣用電流方向與電子流的方向相同(D)每秒鐘通過導體任一截面積
• 47. 下列基本電學相關的敘述，何者正確？(A) 1度電相當於1仟瓦之電器使用1小時(B)導體中電子流動的方向就是傳統之電流的反方向(C)使電荷移動而做功之動力，稱為電功率(D)同性電荷相斥、異性電荷
• 48. 有一電路P = 3W，則下列敘述何者正確？(A)每秒提供(或消耗)3焦耳之能量(B)無效功率等於3VAR(C) 3秒提供(或消耗)了9焦耳能量(D)能量等於3焦耳
• 49. 改善功率因數之效益，下列敘述何者正確？(A)增加線路電流(B)增加系統供應容量(C)減少線路電力損失(D)增加線路電力損失
• 50. 交流電路中，平均功率是指一個交流週期中瞬間功率的平均值，若將100V、60Hz之正弦交流電壓加於50Ω的純電阻兩端，則下列敘述何者正確？(A)瞬間功率之頻率為60Hz(B)瞬間功率最大值為40
• 作文題目:生命的轉彎處 說明:請用白話散文方式寫成作交一篇,文長不拘,必須有清楚的段落,運用新式的標點符號。請勿用新詩體裁寫作。
• 23. 如右圖所示電路，當開關 S 按下甚久(t＞5τ)之後，電容上之電壓 VC應為 (A)20V(B)12V(C)8V(D)0V。
• 21. 已知有甲、乙、丙三個等差數列如下：甲：2001,2003,2005,……,2793,2795乙：2003,2005,2007,……,2793,2795丙：2004,2006,2008,……,2
• 2. Once the virus is introduced on a farm, ______ can occur between mink, as well asfrom mink to oth
• 3. If your pet tests positive for the virus, follow the ______.(A) denotations (B) donation (C) desc
• 4. If your pet shows any signs of illness, call your veterinarian to arrange _____.(A) treatment (B)
• 5. Cat owners can’t distinguish between their cat’s smell and the ____ of another cat.(A) kidney (B)
• 6. _____ can trigger protective immune responses.(A) Vacancy (B) Virus (C) Vacuum (D) Vaccines
• 7. The disease is sometimes a _____ viral disease that affects cloven-hoofed animals.(A) fatal (B) m
• 8. The girls _____ like statues, too scared to move or call for help.(A) froze (B) fled (C) escaped
• 9. If your adult dog does have _____ teeth than 42, it could be because they have lostor broken on a
• 10. Through daily rituals, enrichment activities, and observation, you can provideyour pets with the
• 11. Phone your practice if you can’t afford the ____ of a vet appointment.(A) charge (B) cost (C) sp
• 12. In case the patient is in _____ condition, the triage nurse will directly send thepatient to the
• 13. If the physical exam reveals that your dog has a heart murmur, your veterinarianwill _____ furth
• 14. Pets experience a range of ___ similar to those we experience: love, joy, and fear.(A) emotions
• 15. Some flea preventatives for cats ____ you to wear gloves to apply.(A) comment (B) acquire (C) pr
• 16. The heart is ______, with the left side being larger than the right side.(A) balanced (B) symmet