問題詳情
5. Why was Town's early work with stimulated emission done with microwaves?
(A) He was not concerned with light amplification.
(B) It was easier to work with longer wavelengths.
(C) His partner Schawlow had already begun work on the laser.
(D) The laser had already been developed.
(A) He was not concerned with light amplification.
(B) It was easier to work with longer wavelengths.
(C) His partner Schawlow had already begun work on the laser.
(D) The laser had already been developed.
參考答案
答案：B
難度：困難0.333333
統計：A(0),B(1),C(1),D(1),E(0)
內容推薦
- Questions 31-40There are many theories about the beginning of drama in ancient Greece. The one most
- What is the author's attitude toward the claims made by advocates of health foods?(A) V
- According to the last paragraph, consumers who believe that organic foods are better than co
- The public schools of the 1950's and 1960's faced all of the following problems EX
- 15 The word "overtaxed" in the 14 is closest in meaning to(A) well prepared(B) plentif
- The author implies that there is cause for concern if consumers with limited incomes buy org
- Ellen was absent this morning because she had her tooth _______________.(A) f illed (B) to f ill
- 1 n. proficiency; skill; specialist knowledge and information(A) productivity (B) draw (C) deal (D)
- 14 The word "it" n line 11 refuse to(A) 1995(B) economics(C) the baby boom(D) value
- The style of the passage can best be described as _______________.(A) instructional (B) poet
內容推薦
- In approximately what year was the first maser built?(A) 1917(B) 1951(C) 1953(D) 1957
- The phrase "account for" in line 25 is closest in meaning to(A)record(B)describe(C)
- 1貨物包裝標示有 標誌時，則表示該貨物(A)內裝玻璃杯(B)易碎物品(C)小心搬運(D)勿受衝擊。
- The word "site" in line 17 is closest in meaning to(A)example(B)location(C)develop
- Why does the author mention the specimen preserved in the birth canal (line 19)?(A)To illust
- The word "they" in line 22 refers to(A)pregnant females and young(B)quarry operati
- The word "emerged" in line 20 is closest in meaning to(A) increased(B) concluded(C)
- The word "outstanding" in line 14 is closest in meaning to(A)extensive(B)surprisin
- Drying of meats and vegetables is no longer considered one of _______________ of preservingfood.
- When Tom called me last night, _______________.(A) Petty was talking with me (B) I have taken a
- It’s time for you to think about what to study in college. However, the decision is not to betak
- _______________, people are very thirsty but are not terribly hungry.(A) Often when the weather
- The Internet _______________ to people all over the world in a couple of minutes.(A) makes it po
- If I had gone to New Year’s countdown party last night, I _______________ now.(A) am tired (B) w
- Ms. Chang _______________ as my birthday gift.(A) bought a book for me (B) gave to me a book(C)
- It is amazing that _______________ consists of four hundred people.(A) tennis club (B) the rich
- Spending too much time on the computer till very late, many young people nowadays are notused to
- The proposal _______________ discussed by all the members on the school board when it waspresent
- The visual distinctiveness of a brand may be a combination of any of the following:name, letters, nu
- The passage is to _______________.(A) explain how branding is scarcely emphasized by interna
- Which of the following statements is most likely to be TRUE?(A) Nike’s swoosh and McDonald’s
- In Paragraph 3, the transitional phrase “That being said” can be best replaced by“__________
- According to the U.S. Census, _______________.(A) twelve million Americans are living in an
- Which of the following would probably NOT be found in a folk culture?(A)A carpenter(B)A farme
- The word "prevails" in line 23 is closest in meaning to(A)dominates(B)provides(C)de