题干

 “了解漳州,爱我家乡”.请结合所学化学知识回答问题:

(1)花果之乡﹣﹣漳州水仙、云霄枇杷、平和蜜柚、长泰芦柑、龙海荔枝、天宝香蕉闻名遐迩.甜美的水果中富含的果糖(C6H12O6)是由____ 种元素组成,其中碳、氢原子的个数比是____  ;硝酸钾(KNO3)是花卉、果树的重要肥料,它属于____肥(填“氮”、“钾”或“复合”).

(2)旅游圣地﹣﹣东山风动石、龙文云洞岩、漳浦天福园是游览观光、品尝美食的好去处.海鲜﹣﹣鱼、虾主要富含____(填“维生素”或“蛋白质”);云洞岩盐鸡的制作需要用到食盐,食盐的主要成分是____ .

(3)文明之城﹣﹣诏安书画之乡、南靖云水谣、田螺坑土楼、华安二宜楼等享誉国内外.用墨写的字可以长时间保存,是因为碳在常温下化学性质____(填“活泼”或“不活泼”);碳点燃能与氧气反应,其完全燃烧的化学方程式是____ ;土楼里常设有水井,便于取水灭火,用水灭火的原理是____ ,石灰浆是修建土楼的主要材料之一,它与二氧化碳反应的化学方程式是 ____  .

上一题 下一题 0.0难度 选择题 更新时间:2017-08-23 03:05:54

答案(点此获取答案解析)

3,1\uff1a2,\u590d\u5408,\u86cb\u767d\u8d28,\u6c2f\u5316\u94a0,\u4e0d\u6d3b\u6cfc,C+O2CO2,\u964d\u4f4e\u6e29\u5ea6\u81f3\u53ef\u71c3\u7269\u7684\u7740\u706b\u70b9\u4ee5\u4e0b,Ca\uff08OH\uff092+CO2<

同类题3

根据短文理解,选择正确答案。

    LONDON—Terror struck in the heart of London on Thursday as explosions ripped through three subway trains and blasted(炸开)the roof off a crowded red double-decker bus. At least 37 people were killed and more than 700 wounded in the deadliest attack on the city since the blitz(闪电战)in World War II.

    British Prime Minister Tony Blair blamed Islamic extremists and said the bombings were designed to coincide with the opening in Scotland of a G-8 summit of the world's most powerful leaders. Foreign Secretary Jack Straw said the bombings—which came the day after London won the bid to host the 2012 Olympics--- have the “hallmarks(特点)of an al-Qaida-related attack”.

    Trapped passengers in the Underground railway threw themselves on the floor, some sobbing. As subway cars quickly filled with smoke, people used their umbrellas try to break the windows so that they could get air. Passengers emerged from the Underground covered with blood and soot(黑烟). On the street, in a light rain, buses ferried the wounded, and doctors used a hotel as a hospital.

     “I didn't hear anything, just a flash of light, people screaming, no thoughts of what it was. I just had to get out of the train,” said subway passenger Chris Randall, 28, who was hospitalized with cuts and burns to the face, the legs and hands.

     “It was chaos(混乱),” said Gary Lewis, 32, evacuated(撤离)from a subway train at King's Cross station. “The one haunting(萦绕)image was someone whose face was totally black( with soot) and pouring with blood.”

    Police said there had been no warning and that the blasts at three subway stations went off within 26 minutes, starting at 8:51 a.m. in an Underground train just outside the financial district. Authorities initially blames a power failure but realized it was a terror attack after the bus bombing near the British Museum at 9:47 a.m.—less than an hour after the first explosion.