【判断题】吸收光谱可分为原子光谱和分子光谱两大类。
【单选题】—Are there any fish in the lake now? —No, _____ any water in it in winter. [ ]
【简答题】There was hardly any change in the sales throughout the period except for a slight rise on 200
【简答题】根据光谱产生的机理,光学光谱通常可分为:原子光谱、()
【简答题】There was hardly any change in the sales throughout the period except for a slight rise on 1999.
【简答题】按照原子化方式分类,原子吸收光谱仪可分为() 和( ) 原子吸收光谱仪。
【多选题】根据原子化手段的不同,原子光谱法可分为( )。
【单选题】按照产生光谱的物质类型不同,光谱可以分为______。
D.
X射线发射光谱、X射线吸收光谱、X射线荧光光谱、X射线衍射光谱
【单选题】Many students have never been to China before and _____ any Chinese. [ ]