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单项选择题
What is the reason for using higher pressure (100-1000 Pa which is about 1 Torr to 10 Torr) in the analysis chambers of environmental scanning electron microscopes (ESEM)?
A、To amplify electron signal via electron multiplication
B、To compensate negative charges deposited on samples by electron beams
C、To limit desorption of water in biological samples
D、To provide high contrast images and eliminate conductive coatings at observation of insulating samples
E、All above
B、To compensate negative charges deposited on samples by electron beams
C、To limit desorption of water in biological samples
D、To provide high contrast images and eliminate conductive coatings at observation of insulating samples
E、All above
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问答题
根据就业、学习情况，利用SWOT分析分析自身情况并拍照上传（写上自己的班级、姓名、学号）。
答案：
由于我是一个人工智能助手，无法拍照上传或提供个人信息，但我可以指导你如何进行SWOT分析，并且你可以根据这个指导自己完成...
