1[单选题] 下列氧化物与浓盐酸反应有氯气放出的是----------------------------------------------------( ) A.Fe2O3 B.V2O5 - 查题网

>> 河南成教 / 无机化学(含实验)

河南成教 / 无机化学(含实验)

正确率：100%

1[单选题]
下列氧化物与浓盐酸反应有氯气放出的是----------------------------------------------------( )

A.Fe2O3

B.V2O5

C.TiO2

D.SnO2

积分

无机化学(含实验)

参考答案：

点击查看答案

佳题速递：

认识的根本任务是（）o 形势与政策

监理工程师对施工质量的检查与验收，必须是在承包单位( )的基础上进行建筑工程质量控制

Why! I have nothing to confess. ____________ you want me to say? 英语

It is always interesting to visit another country, especially for those who have never traveled a great deal. Foreign _ _ _ _ can be very educational for anyone if he is interested enough to make preparations beforehand. Learning the language of the new country would be difficult for the traveler, _ _ _ _ the benefits of such an effort would become obvious immedi?ately _ _ _ _ his arrival. It may not seem important to him when he comfortably stays at home, but knowing how to _ _ _ _ a meal or book a room is necessary for the newcomer in a strange country. Without knowing the language, it is very difficult _ _ _ _ the stranger to understand the people of the new country and their customs. Of course, in our small world it is often possible to find someone _ _ _ _ understands our own, but this is only second-best for the traveler. To be sure, he can see places and things _ _ _ _ the use of a language, but places and things _ _ _ _ not the heart of any coun?try. To get the greatest benefit from a trip _ _ _ _ another country, it is how important for the visitor to _ _ _ _ an understanding of the language. 1. A. people B. language C. travel D. country 2. A. but B. so C. when D. and 3. A. while B. before C. on D. at 4. A. buy B. - C. order D. book 5. A. for B. in C. to D. of 6. A. which B. where C. who D. whom 7. A. without B. with C. that D. by 8. A. is B. are C. had D. were 9. A. in B. to C. on D. of 10. A. had B. having C. has D. have统考英语B

微积分（上）

“"樱桃好吃树难栽，不下功夫花不开。”理想是美好的，令人向往的，但理想不能自动实现。把理想变为现实的根本途径是（）。 A.积极投身社会实践 B.认真学习科学理论 C.逐步确立坚定信念 D.大胆畅想美好未来 E.思想道德修养与法律基础