主页
学科
搜索
账户
常见问题
当前学科:相关专业知识
题目:
单选
沟固位形固位沟的深度一般为()
A . A.1mm
B . B.2mm
C . C.3mm
D . D.4mm
E . E.5mm
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:
有自己语言文字的民族有哪些?
制定免疫程序时,根据疫病发生规律,免疫时间应在()时间进行免疫
由于地区、民族不同,对山歌的称谓也不同,如在陕北,山歌被称为信天游,而在山西河曲一带山歌被称为,在内蒙被称为,在甘肃、青海、宁夏一带被称为,在苗族地区被称为“恰央”或,在安徽大别山一带被称为“慢赶牛”或“挣颈红”。有些地方仍称山歌,如“客家山歌”“兴国山歌”。()
关于分辨力的说法不正确的是()。
按照恩格尔定律,随着家庭收入的增加,用于家庭经营方面的支出一般是()。
The Greek philosopher Aristotle said that a persons highest happiness comes from the use of his or her intelligence. Religious books such as the Koran and Bible discuss faith as a form. of happiness. The British scientist Charles Darwin believed that all species were formed in a way so as to enjoy happiness. And, the United States declaration of independence guarantees "life, liberty and the pursuit of happiness as a basic human right". People throughout history may have had different ideas about happiness. But today, many people are still not very sure about it. Some findings are not surprising. For example, the database suggests that married people are happier than single people. People who like to be with other people are happier than unsocial people. People with children are equally happy as couples without children. And wealthier people are only a little happier than poorer people. This database also shows that studying happiness no longer involves just theories and ideas. Economists, psychiatrists, doctors and social scientists are finding ways of understanding happiness by examining real sets of information. Happiness is an extremely popular subject, if you search for "happiness" on the web site of the online bookseller, Amazon. com, you will find more than two hundred thousand results. Dan Gilbert teaches psychology at Harvard University in Massachusetts. He recently looks at the way the human mind is different from other animals because we can think about the future and use our imaginations. He also explains how our minds can trick us in a way that creates difficulties in making happy choices for the future. "Most of the time when people are wrong about how theyll feel about the future, theyre wrong in the direction of thinking that things will matter to them more than they really do. We are remarkable at our ability to adjust and a-dapt to almost any situation but we seem not to know this about ourselves. And so we mistakenly predict that good things will make us happy, really happy for a really long time. Bad things, why theyll just slay us. It turns out neither of these things is on the whole true. "The first paragraph in the passage is mainly talking about______.A.the importance of happinessB.the cause of happinessC.the meaning of happinessD.people who are happy
焊机的进出水压力差一般为()MpA以上
()为公司国有资本经营预算组织部门。
下列哪种生药与蜜环菌共生?()
生物放大(biomagnification)