光电峰的FWHM与射线能量之比的百分数表示什么（）。 A.闪烁探测器的计数率特性 B

休克时交感—肾上腺髓质系统持续强烈兴奋。

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

If you feel stressed by responsibilities at work, you should take a step back and identify (识别) those of   61  (great)and less importance. Then, handle the most important tasks first so you’ll feel a real sense of   62  (achieve). Leaving the less important things until tomorrow   63  (be) often acceptable.

Most of us are more focused   64   our tasks in the morning than we are later in the day. So, get an early start and try to be as productive   65   possible before lunch. This will give you the confidence you need to get you through the afternoon and go home feeling accomplished.

Recent   66  (study) show that we are far more productive at work if we take short breaks   67  (regular). Give your body and brain a rest by stepping outside for   68   while, exercising, or dong something you enjoy.

If you find something you love doing outside of the office, you’ll be less likely   69  (bring) your work home. It could be anything-gardening, cooking, music, sports—but whatever it is,   70  (make) sure it’s a relief from daily stress rather than another thing to worry about.

61（）

I _____ in Shanghai since I was a child.          [ ]

A. used to live  

B. lived    

C. have lived    

D. live

学习型组织是____。

一般而言，经济发展水平越高，管理水平越高，流动资产投资占总投资的比例( )。

A．越高

B．越低

C．相对稳定

D．不动