TEMs produce（）高分辨率, two-dimensional images, allowing for a wide range of applications. 正确答案：high-resolution

Since all groups have their（）特征振动频率, information regarding molecular structure can be gained from the spectrum. 正确答案：characteristic vibrational frequency

Thes analysis etechniques for chemical composition could be classified as（）（光谱学）, which is study of the interaction between matters and radiated energy. 正确答案：spectroscopy

In SEM, magnification is controlled by objective lens power. A.正确B.错误 正确答案：错误

The scanning electron microscopy（SEM）uses a focused beam of high-energy electrons to generate a variety of signals at the inside of solid specimens. A.正确B.错误 正确答案：错误

The same chemical composition could result in the same phase with similar properties. A.正确B.错误 正确答案：错误

Infrared spectrosocopy exploits the fact that molecules absorb specific frequencies that are characteristic of their structure. These absorptions are resonant frequencies, i.e. the frequency of the absorbed radiation matched the transition energy of the bond or group that vibrate … 阅读详情>> "Infrared spectrosocopy exploits the fact that molecules absorb specific frequencies that are characteristic of their structure. These absorptions are resonant frequencies, i.e. the frequency of the absorbed radiation matched the transition energy of the b"

DTA measures the energy required to keep both the reference and the sample at the same temperature whereas DSC measures the deference in temperature between the sample and the reference when they are both put under the same heat. A.正确B.错误 正确答案：错误

Which of the following belongs to composition analysis？（） A.XRDB.XPSC.EDSD.DSC 正确答案：XPS；EDS

The typed of signals produced by a SEM include:（） A.secondary electron（SE）B.back-scattered electron（BSE）C.characteristic X-raysD.light（cathoduluminescence）（CL） 正确答案：secondary electron（SE）；back-scattered electron（BSE）；characteristic X-rays；light（cathoduluminescence）（CL）

The most common microscopies are（）microscopy and（）microscopy.（） A.photoelectronB.opticalC.electronD.SEM 正确答案：optical；electron

The analysis and testing techniques can be classified into several catalogues（） A.chemical composition analysisB.phase analysisC.microstructure analysisD.testing for properties 正确答案：chemical composition analysis；phase analysis；microstructure analysis；testing for properties