【简答题】(14分)(1)用系统命名法命名下列物质 ① ________ ② CH 3 CH 2 CH=CHCH 3 ________ (2)写出结构简式或名称: ①分子式为C 8 H 10 的芳香烃,苯环上的一溴取代物只有一种,写出该芳香烃结构简式_______ ②戊烷(C 5 H 12 )的某种同分异构体只有一种一氯代物,写出该戊烷的名称________ (3)某有机物A的结构简式如图。 ①写出A中官能...
【单选题】What does the underlined sentence in the last paragraph mean?
A.
People are aware of what kind of languages they are using while speaking.
B.
People can distinguish the types of languages well than experts.
C.
Experts are not the only that can distinguish between these types.
D.
Most speakers are unaware of what type of speech they are using.
【单选题】变频器实训中Plc编程时,启动停止按钮这种输入变量,编辑的地址位一般是:
【判断题】参加工作时间较短的人,还没有为党和人民做多少工作,没有申请入党的资格,得想等做出了成绩后再向党组织申请。
【简答题】单一责任制目前有两种形式网状责任制和( )。