皮皮学，免费搜题
登录
搜题
【简答题】
几种常见物质之间的相互转化关系如图所示（每个字母各代表一种物质，每个箭头各表示一个化学反应，部分反应物、生成物及反应条件略去）．已知五中物质均由C、H、O中部分元素组成．A和B所含元素相同，D和E所含元素相同，X为单质，A为有毒气体，B和D可以发生化合反应． （1）E的名称是______，B的一种用途是______． （2）写出X→D转化的化学方程式：______． （3）实现A→B转化的化学反应类型______（填“一定”或“不一定”）属于化合反应．
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】People tend to think of computers as isolated machines, working away all by themselves. Some personal computers do without an outside link, like someone's secret cabin in the woods. But just as most o...
【单选题】我国正常成年人
A.
男性的血量约占体重8%，女性约占体重7.5%
B.
男性的血量约占体重7.5%，女性约占体重8%
C.
男性的血量约占体重7%，女性约占体重6%
D.
勇性的血量约占体重9%，女性约占体重8%
E.
男性的血量约占体重8%，女性约占体重9%
【单选题】Hacking People tend to think of computers as isolated machines, working away all by themselves. Some do --personal computer without an outside link, like someone's hideaway (隐蔽的) cabin in the woods. B...
A.
to show that a hacker is more dangerous than a thief.
B.
to tell people that thieves like to steal computers nowadays.
C.
to demand that a protective computer system should be set up against thieves.
D.
to demonstrate that hackers and thieves are the same people.
【单选题】Network-based monitoring and alarm system commonly used the form of ______ network.
A.
combination of LAN and fieldbus
B.
RS485 bus
C.
Fieldbus
D.
LAN (local area network)
【单选题】我国正常成年人( )
A.
男性的血量约占体重8%，女性约占体重7.5%
B.
男性的血量约占体重7.5%，女性约占体重8%
C.
男性的血量约占体重7%，女性约占体重6%
D.
男性的血量约占体重9%，女性约占体重8%
E.
男性的血量约占体重8%，女性约占体重9%
【单选题】Network-based monitoring and alarm system commonly used the form of _____ network.
A.
combination of LAN and fieldbus
B.
RS485 bus
C.
fieldbus
D.
LAN (local area network)
相关题目：
参考解析：
知识点：
题目纠错 0
发布
