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A characteristic of American culture that has become almost a tradition is to respect the self-made man-the man who has risen to the top through his own efforts, usually beginning by working with his hands. While the leader in business or industry or the college professor occupies a higher social position and commands greater respect in the community than the common laborer or even the skilled factory worker, he may take pains to point out that his father started life in America as a farmer or laborer of some sort. This attitude toward manual (体力的) labor is now still seen in many aspects of American life. One is invited to dinner at a home that is not only comfortably but even luxuriously (豪华地)furnished and in which there is every evidence of the fact that the family has been able to afford foreign travel, expensive hobbies, and college education for the children; yet the hostess probably will cook the dinner herself, will serve it herself and will wash dishes afterward, furthermore the dinner will not consist merely of something quickly and easily assembled from contents of various cans and a cake or a pie bought at the nearby bakery. On the contrary, the hostess usually takes pride in careful preparation of special dishes. A professional man may talk about washing the car, digging in his flowerbeds, painting the house. His wife may even help with these things, just as he often helps her with the dishwashing. The son who is away at college may wait on table and wash dishes for his living, or during the summer he may work with a construction gang on a highway in order to pay for his education.From paragraph 1, we can know that in America （）.
从事隔离开关倒闸作业人员，其安全等级不得低于（）级。倒闸作业应由两人进行，一人监护一人操作。
香石竹要求通气和排水性能良好、腐殖质丰富的的粘壤土，以组培和扦插繁殖为主。主要用途是（）。
下列关于炼蜜的叙述不正确的是（）
哪项除外是入水量（）
问候用语分为（）和（）两种
辅助证据即补强证据，又称（）。
“潜移默化”的记忆过程属于（ ）。
单IMA组配置1对E1即可保证载波速率达到1.6M。
经过SWOT分析，企业处在WT象限，应采取的战略类型是（ ）。
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