【简答题】某化合物的分子式为 C 5 H 12 O 2 ,其氢谱图中的二组峰的面积之比为 1:1 (由低场到高场)。试推测该化合物的结构,并说明理由。(
【简答题】What is the definition of ICC given by Edward T. Hall?
【单选题】Personal space, an updated form. of Edward T. Hall's 1966 proxemics, is the region surrounding each person, or that area which a person considers his domain or territory. Often if entered by another b...
A.
Personal space means the space one occupies as a resident.
B.
The research of personal space originated from promexics.
C.
Not only human beings need personal space.
D.
Imagined boundaries and habitat consist one's need of personal space.
【简答题】某化合物的分子式为C 12 H 14 O 2 ,NMR光谱如下。NMR数据见下表: 峰 号 a b c d e 化学位移 含氢数 峰分裂数 1.25 6 2 5.0 1 多重 6.3 1 2 7.3 5 多重 7.7 1 2 试推测其结构,并给出峰归属。
【判断题】发动机进气系统中空气流量计的作用是计量进入气缸的空气质量(或体积),以便发动机电脑计算与之相配的喷油量。
【判断题】严重开放性骨折清创后时,为稳定骨折断端,一般采用外固定。
【判断题】The iceberg model of culture is developed by American anthropologist Edward T. Hall