問題詳情
下列磷的化合物中，何者磷原子的氧化數最低？
(A) H3PO3
(B) H4P2O7
(C) NaH2PO2
(D) PH3。
(A) H3PO3
(B) H4P2O7
(C) NaH2PO2
(D) PH3。
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- In a democratic country, the right to speak freely is protected by the ______.(A) Optimism (B) P
- The vocalist of that rock band has a ______ voice. Nowhere in the world can you find such a pene
- 我需要立刻見這家銀行的負責人。I want to see the person who is in ____of the bank i____ .
- 下列各選項中，何組兩化合物皆含有氧化數為－1 的元素？ (A) Na2O、F2O2 (B) Cu2O、HCl (C) HClOCa(ClO)Cl(D) H2OKH (E) H2S、OF2。
- 就氧元素而言，下列反應中何者之氧並非氧化劑？ (A) O2＋2Na → Na2O2 (B) O2＋F2 → O2F2 (C) CH4＋O2 →CO2＋2H2 (D) S＋O2 → SO2 。
- Though we provide inexpensive food, our commitment to high-quality service is not ______.(A) arr
- All ______ made by human beings to control nature are destined to fail. (A) blizzards (B) attemp
- 下列反應，何者需要氧化劑參與？ (A) KMnO4 → MnSO4 (B) K2Cr2O7 → K2CrO4 (C) MnO2 → MnCl2(D) H2O2 → O2 (E) Na2S2O5 →
- 在反應 S＋KOH → K2S＋K2SO4＋H2O 中，氧化劑與還原劑的硫元素質量比為何？(A) 1：3 (B) 1：2 (C) 3：1 (D) 2：1。
- My new shoes made my heels _______. My feet hurt a lot. (A) moist (B) drugged (C) clumsy (D) raw
內容推薦
- 【題組】Why was the tsunami warning not effective?(A) The residents didn’t care about the tsunami.(B
- Although the museum has been ______ against fire and theft, the loss is still inestimable.(A) qu
- Nature is ______, and any attempt to tame it will be futile or even devastating.(A) intellectual
- 我不想和這個案子有關連。你最好找其他人幫忙。I don’t want to get____ in this case. You had better find someone else to h
- 二、單選文法題 (20 題 每題 2 分 共 40 分)Living in Stockholm is ______ living in any other city in the world.
- According to the weather ______, the rain will persist for the whole week. We had better put off
- 【題組】承上題，那些地方是此眺望台視野的「死角」？ (A)甲丁 (B)乙戊 (C)丙戊 (D)甲戊
- Being physically challenged, he has to overcome a lot of ______ to succeed. (A) obstacles (B) sc
- 【題組】All the following countries offered aid except which one?(A)New Zealand. (B) Australia.(C) T
- The expedition did not ______ the top. (A) arrive (B) reach (C) get (D) come
- 新的捷運線讓我有可能在十五分鐘內到學校。The new MRT line will make it p____ for me to get to school in 15 minutes.
- (B)It happens to everyone now and again. You walk into a store. You know you've never been ther
- 四 、 閱 讀 測 驗 （ 佔 1 4 分 ）(A)Tsunamis triggered by an earthquake engulfed the Samoan islands and the is
- Do you know in what year the largest aircraft A-380 will make its debut ______ flight? (A) sympa
- 包裹在布裡的石頭被用來將床預熱。The stones w____ in cloth were used to warm the bed.
- 【題組】What do scientists believe about the feeling called deja vu?(A) It almost never comes to hea
- 【題組】How many people are there in American Samoa?(A) 65,000 people. (B) 220,000 people.(C) 710,00
- 下列何物質可在某個反應中當作氧化劑，而在另一反應中當還原劑？(A) HCl (B) KMnO4 (C) H2SO4 (D) HNO2。
- The areas of the earth ______ are usually cold and wind-blown places.(A) near the Equator (B) at
- 最重要的是，他們的房子不會對環境造成傷害。對此，他們引以為傲。 Most____ of all, they feel proud that their houses won't do
- 【題組】Why is deja vu hard to understand?(A) Very few people want to talk about it.(B) Doctors have
- Dr. Wang has ______ research on genetic engineering since the early 80s. From then on, his resea
- 當你到新墨西哥州，你會看到一些長像奇特的房子座落在沙漠中央。它們叫大地船。When you arrive at New Mexico, you will see a n____ of odd-l
- 翻譯題I passed my finals with flying colors. 3% （英翻中）
- The goal of the summit conference is to sign a peace ______ banning any attempt to develop nucle