【单选题】下列关于红外光谱的叙述,错误的是( )
A.
红外光谱是用 波数4000~ 10000px -1 红外光照射有机化合物,引起分子振动能级跃迁的吸收光谱
B.
分子吸收红外线后可产生弯曲振动和伸缩振动两种类型
【简答题】Are you satisfied with your ______________ (perform) in the activity?
【单选题】Can you choose the appropriate cause for the following statement?Women tend to live longer than men owing to ___________________.
C.
poor immunity against diseases
【单选题】下面有关Word表格功能的说法不正确的是( )
D.
设置表格的边框线只能使用表格工具中“设计”选项卡
【单选题】下列叙述正确的是( )。
E.
物质由于分子的振动、转动能级的跃迁产生的吸收光谱称为荧光光谱
【多选题】How to validate and solidify your great idea? (More than one correct answer)
A.
Perform. market research
B.
Recruit your team numbers from the best engineering and business talent you know
C.
Create your business plan outline
D.
Brainstorm a list of potential questions that investors will probably ask and be prepared to answer them succinctly.
【单选题】下面有关Word表格功能的说法不正确的是( )。
【单选题】Women tend to live longer than men.