采用调制的空心阴极灯主要是为了（）。_工程光学_全学科试题题库

当前学科：工程光学

题目：单选
采用调制的空心阴极灯主要是为了（）。
答案： <查看本题扣1积分>

查看答案

答案不对？请尝试站内搜索

推荐知识点:

男，13岁，2年来反复镜下血尿，偶见红细胞管型。尿蛋白定量1．8g/d，肌酐97．24μmol／L，尿素氮5．4mmol／L，IgG14g/L，IgA0．6g/L，IgM0．3/L，抗O1：200。为了明确诊断，最有价值的进一步检查是（）

妊娠合并心脏病正确的是（）

击法

初产妇，妊娠38周，规律宫缩6小时，枕左前位，估计胎儿体重2700g，胎心142次／分。阴道检查：宫口开大3cm，未破膜，S+1，骨盆外测量未见异常。若此后宫缩逐渐减弱，产程已18小时，胎膜已破，宫口开大8cm，此时恰当处理应是（）

以货币作为清偿工具的叫做（）。

试述DIC的发生机制。

地基的局部剪切阶段又称为（）阶段。

立方晶系的晶体常数特征为：（）

Literacy Volunteer Last summer I went through a training program and became a literacy volunteer （扫盲志愿者）. The training I received， though excellent， did not tell me how it was to work with a real student， however. When I began to discover what other people's lives were like because they could not read， I realized the true importance of reading. My first student Jane was a 44-year-old single mother of three. In the first lesson， I found out she walked two miles to the nearest supermarket twice a week because she didn't know which bus to take. When I told her I would get her a bus schedule， she told me it would not help because she could not read it. She said she also had difficulty once she got to the supermarket because she couldn't always remember what she needed. Since she did not know words， she could not write out a shopping list. Also， she could only recognize items by their labels. As a result， if the product had a different label， she would not recognize it as the product she wanted. As we worked together， learning how to read built Jane's self-confidence， which encouraged her to continue in her studies. She began to make rapid progress and was even able to take the bus to the supermarket. After this successful trip， she reported how self-confident she felt. At the end of the program， she began helping her youngest son， Tony， a shy first grader， with his reading. She sat with him before he went to sleep and together they would read bedtime stories. When his eyes became wide with excitement as she read pride was written all over her face， and she began to see how her own hard work in learning to read paid off. As she described this experience， I was proud of myself， too. I found that helping Jane to build her self-confidence was more rewarding than anything I had ever done before. As a literacy volunteer， I learned a great deal about teaching and helping others. In fact， I may have learned more from the experience than Jane did. I once could not read.（）

MRA的方法有（）.