问题
单项选择题
金属经某种特殊处理后，在金相显微镜下看到的特征与形貌称为（）。
A．晶向
B．晶格
C．晶胞
D．显微组织
答案
参考答案：D
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金属经某种特殊处理后，在金相显微镜下看到的特征与形貌称为（）。
A．晶向
B．晶格
C．晶胞
D．显微组织
参考答案：D
| Stress is with us all the time. It comes from mental or emotional activity as well as physical activity. It is unique and personal to each of us. So personal, in fact, that what may be relaxing to one person may be stressful to another. For example, if you’re a busy executive who likes to keep occupied all of the time, "taking it easy" at the beach on a beautiful day may be extremely frustrating, nonproductive, and upsetting. You may be emotionally distressed from "doing nothing." Too much emotional stress can cause physical illnesses such as high blood pressure, ulcers, or even heart disease. Physical stress from work or exercise is not likely to cause such ailments. The truth is that physical exercise can help you to relax and to better handle your mental or emotional stress. |
This article, published by the Department of Health and Human Services, probably came from the ______.
A．Federal Bureau of Investigation
B．Alcohol, Drug Abuse, and Mental Health Administration
C．Education Administration
D．Communicable Diseases Administration