問題詳情
14. 某金屬之密度為 1.6 克／立方公分，其原子半徑為 10－10公尺，原子核半徑為 2×10－15公尺，則該原子核的密度（單位為克／立方公分）大約為
(A)1.6×10－15
(B)1.6
(C)2.0×1015
(D)2.0×105
(E)2.0×1014。
(A)1.6×10－15
(B)1.6
(C)2.0×1015
(D)2.0×105
(E)2.0×1014。
參考答案
答案：E
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- 【題組】( ) What does https: mean according to the passage?(A) It shows that it’s the website addres
- ( )We are ______ peace and prosperity.(A)good for(B)anxious for(C)bound for(D)notorious for
- When the Chinese baseball team won the game abroad, they received many ____of congratulations from
- 自然界中 A 有三種同位素 30A、31A、33A，則 A2的分子量不可能為下列何者？ (A)65 (B)64 (C)63 (D)62 (E)61。
- ( )One million dollars ______ a large sum of money to me.(A)mean(B)meaning(C)have meant(D)means
- 【題組】( ) Which of the following ways to keep passwords a secret is TRUE?(A) Using your English na
- ( )Usually Chinese parents are very much ______ their children’s future.(A)poor at(B)surprised at
- Putting together a computer is a bit ___.(A) mathematical (B) inventive (C) technical (D) average
- 下列哪一粒子之荷質比的數值為最小值？ (A)12C 原子 (B)氫離子 (C)α 粒子 (C)電子 (D)質子。
- ( )The number of the foreign students in our college _____ to 500 so far.(A)grows(B)have grown(C)
內容推薦
- The missile has a heat-seeking _____ which enables it to find its target.(A) cigarette (B) cerami
- 【題組】( ) What does the word avoid in the third paragraph mean?(A) To stay away from something bad
- 四、閱讀測驗 (共 20 分，每題 2 分)(一)The word “sibling” means children of the same parents. Sometimes, these chi
- The government has set up many ____ in memory of the 228 incident.(A) magnets (B) monuments (C) m
- 36 When doing a scientific experiment, you should be careful not to jump to a _____. All factors mus
- Fanny agrees with most of what the man said in _____, but she still has a problem with a couple o
- The doctor took a ____ sample to see if Mary had lung cancer.(A)memorial (B) timber (C) spear (D
- 【題組】(A) whether (B) how (C) why (D) what
- II. 綜合測驗 (26%)[A] Believe it or not, the presidential pardon of a turkey—or two—has long been a Than
- 【題組】(A) that (B) what (C) which (D) when
- 【題組】(A) because of (B) as to (C) while (D) since
- 請依動詞時態(現在式/過去式/未來式/現在完成式/過去完成式- - - - - )部分判斷，選出一個正確句子(A) A violent storm blew the vessel off co
- 【題組】(A) which (B) what (C) where (D) when
- 【題組】(A) the noise stopped (B) was the noise stop(C) did the noise stop (D) the noise did not stop
- In the speech, Mr. Smith c yed an important message about world peace to the audience.
- 【題組】(A) and taking (B) taken (C) taking (D) which takes
- 請依動狀詞(V或to+V或V-ing或V-en/P.P. )部分判斷，選出一個正確句子(A) Months later, a severe drought had caused the cro
- 【題組】(A) was bonded to (B) had bonded with(C) was bonded with (D) bonded to
- 【題組】(A) take (B) took (C) had taken (D)has taken
- Despite its name, early motion pictures were often a ied on the piano, organ, or sometimes an en
- [C] Just__23__ this animated film shows, polar bears are at risk of extinction. They not only have b
- 請依動狀詞部分判斷，選出一個正確句子(A) For the Thanksgiving dinner, the guests had roast turkey following by a de
- 【題組】(A) with (B) by (C) because (D) in
- [E] Many technologies that seem commonplace today appeared miraculous when they first appeared on th
- Reading is good for students, since it leads to the e n of their vocabulary.