資訊推薦

• 13 兩連續隨機變數 X、Y 之結合機率密度函數（joint probability density function）為 ，求 P( X ＜ Y ) =？  (A) (B) (C) (D)
• 14 一個盒子中有 998 個黑球及 2 個白球，若自盒中隨機挑選 500 球，令 x 為其中白球之數量，試求條件機率 P ( x = 1 | x = 1 或 x = 2) =？(A) (B) (
• 15 給定一個常態分布（Normal Distribution）的隨機變數 X，它的期望值（mean）為 0，變異值（variance）為 5。已知 P (X ＞ C) = 0.05，也就是 X 大於
• 16 若 X 為一連續隨機變數（continuous random variable），其機率密度函數（probability density function）為 ，試求 k =？  (A)1 (B
• 17 求 之值為何？ (A) (B) (C) (D)
• 18 請計算 之值，其中 i = √− 1 。 (A) − 4 + 4i (B) 4i (C)−4 (D)4
• 19 若 ϕ ( x, y , z) = xy − yz + xyz ，則其在點 P = (0,−1, 1) 之最大改變率（rate of change）之值為何？(A)−2 (B)2 (C) √5
• 20 已知三向量 a = j − 2k 、 b = i − 2k 和 c = 3i + j + k ， (b + 2c) × a 等於：(A) − 4i + 14 j + 7k (B) 4i − 14
• 1.53歲男性，因水腫及嚴重蛋白尿住院，腎臟穿刺顯示病理變化為:膜性增生性腎炎（membranoproliferative GN），他也有冷凝球蛋白血症（cryoglobulinemia），下列那一種
• 1.顯影劑腎病變(contrast nephropathy)之引發主要與何種介質(mediator)有關？(A)腎上腺皮質醛酮(aldosterone)(B)內皮素(endothelin)(C)前列腺
• 2. Eric, _______ you help me with theseboxes?(A) may(B) could(C) should(D) do
• 3. Sir, this is a _______ zone. Will youplease move your car?(A) no-park(B) no-parking(C) not-parked
• 4. Let's _______ down and relax for awhile.(A) sitting(B) sat(C) sit(D) to sit
• 5. There _______ four applicants in thewaiting room.(A) has(B) have(C) is(D) are
• 6. It's very _______ that the field triphas been cancelled.(A) disappointing(B) disappointed(C)
• 7. My grandmother spends _______ hertime on the vegetable farm.(A) much of(B) much(C) many of(D) a l
• 8. The radio is too loud； please _______a little.(A) turn it out(B) turn it off(C) turn it away(D) t
• 9. Cindy will be responsible for_______ guests at the party.(A) receive(B) receiving(C) to receive(D
• 10. In Western culture, guests are notexpected _______ gifts, but a smalltoken such as wine or flowe
• 11. Letters from our families _______ uswhat is happening at home.(A) say(B) talk(C) tell(D) speak
• 12. Jason is excited about _______ toJapan next year.(A) will go(B) to go(C) going(D) be going
• 13. All the guests are requested to_______ their shoes before they enterthe house.(A) turn on(B) tur
• 14. Amy said there was a lot of food onthe table, but we didn't see _______.(A) one(B) them(C)
• 15. Phoebe _______ to be the next classleader.(A) was assigned(B) has assigned(C) assigned(D) assign
• 16. Mr. Smith promised to _______ hischildren to the zoo this afternoon.(A) show(B) take(C) carry(D)