題庫堂
檢索
題庫堂
首頁
數學
英文學習
政治學
統計學
經濟學
藥理學
中醫藥物學
財政學
法學知識
公共行政
警察學
BI規劃師
財務管理
公共衛生學
工程經濟學
電力電子學
當前位置:
首頁
11 平均壽命和以下那一項最有關聯?(A) 穿透率(B) α衰變(C) β衰變(D) 半衰期
問題詳情
11 平均壽命和以下那一項最有關聯?
(A) 穿透率
(B) α衰變
(C) β衰變
(D) 半衰期
參考答案
上一篇 :
10 25 MeV 的光子射束打到病人後,會和體內的氧起作用,產生放射性核種,此核種又會變成穩定的那個元素?(A)氧─15(B) 氮─15(C) 碳─15(D) 硼─13
下一篇 :
12 有關醫用診斷 X 光有用射束裏,腳跟效應(heel effect)發生在靠 X 光管內那裡的 X 光強度會較低?(A) 上方(B) 中間(C) 陰極側(D) 陽極側
資訊推薦
13 原子能階主要是在描述什麼?(A) 質子能量(B) 原子核能量(C) 電子軌道能量(D) 中子能量
5. =a+b,若 a 為正整數且 0<b<1,則 a=?(A)2499 (B)2500 (C)2450 (D)2449
6.下列哪一個數不是不等式-3x-7≦3-x 的解?(A)-6 (B)1.7 (C)-3.14 (D)0
三、閱讀測驗 Last year, people are crazy about coloring books. Now, it has become less active and bee
【題組】29. Why are more and more people interested in writing?(A) Because people will forget how to wri
【題組】30. What kind of industry isn’t influenced by the penmanship?(A) fountain-pen industry(B) publis
2. The government has sent delegates to ______ with Japan for a free-trade agreement.(A) foster (B)
3. The party leader tends to make ______ decisions without reasoning and without thinking aboutthe c
4. An unmade but ______source told BBC News that several high-ranking officers were involvedin the s
5. As the pilot of the aircraft, you have the responsibility to use everythig ______to ensure safefl
6. I am Dr. Lee's lawyer. I am calling ______ him, who wishes to complain about the car he boug
7. We'd love to have you ______since you just moved to the neighborhood and don't have man
8. At first, Mr. and Mrs. Wang thought the man hit their car by accident; but then they realized hed
9.You cannot use common ______expressions in formal writing.(A) constitutional (B) congressional (C)
10. The Minister of Economy is meeting his Japanese ______ in Tokyo today.(A) correspondent (B) coun
11. One could face the death penalty for attempting to ______drugs into our country.(A) slaughter (B
12. There are four national roads that impose a ______on each vehicle using them.(A) riot (B) rite (
23.下圖有幾個菱形? (A)24(B)27(C)30(D)33
13. In many countries, people are ______ innocent until proven guilty.(A) presumed (B) tackled (C) s
14. The workers rejected the government's ______and decided to go on strike.(A) precaution (B)
15. Little Tigers is a team ______ twenty excellent players.(A) consists (B) consisting for (C) whic
16. Implanted chips are to dogs ______ID cards are to people.(A) that (B) while(C)what(D)when
17. He will be present at the meeting_______person.(A) at (B) by(C) in(D) on
18. He dropped socialism________enterprise and the market economy.(A) in favor of (B) in fear of (C)
19. Jane has lived in Britain for three years and she_________ on the left.(A) used to drive (B) is