主页
学科
搜索
账户
常见问题
当前学科：金属焊接与切割(综合练习)
题目：
填空题
未焊透一般分为根部未焊透，（）未焊透和（）未焊透三种类型。
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:
在游戏活动以外的其它活动之中，幼儿()水平则表现的非常低。
可转换债券的特点包括()。
已知某流体的绝对温度是593K，则其摄氏温度是（）。
根据牵引变电所的位置及其附近电源的情况，一次侧结线通常有（）种形式。
进行估算活动持续时间时不应考虑以下哪一项？（）
《二十四孝图》中，“哭竹生笋”是三国时吴国孟宗的故事。唐代（）编的《白氏六帖》中说：“孟宗后母好笋，令宗冬月求之，宗入竹林恸哭，笋为之出。”
中国证券登记结算有限责任公司的网络投票系统基于互联网。根据操作流程，投资者办理身份验证，须遵循“先激活，后注册”的程序。
Slang , informal, nonstandard words and phrases , generally have shorter lives than the expressions of ordinary colloquial speech. The former are typically formed by creative , often witty juxtapositions of words or images. Slang can be contrasted with jargon (technical language of occupational or other groups) and with argot or cant (secret vocabulary of underworld groups) , but the borderlines separating these categories from slang are extremely blurred , and some writers use the terms cant , argot , and jargon in a general way to include all the foregoing meanings.Slang trends originate in subcultures within a society. Occupational groups (for example , loggers , police , medical professionals , and computer specialists) are prominent originators of both jargon and slang. Other groups creating slang include the armed forces , teenagers , racial minorities , ghetto residents , labor unions , citizen-band radiobroadcasters , sports groups , drug addicts , criminals , and even religious denominations (Episcopalians , for example , produced the term ‘spike' , meaning a High Church Anglican). Slang expressionsoften embody attitudes and values of group members. They may thus contribute to a sense of group identity and may convey to the, listener information about the speaker' s background. Before an apt expression becomes slang , however , it must be widely adopted by members of the subculture. At this point slang and jargon overlap greatly. If the subculture has enoughcontact with the mainstream culture , its figures of speech become slang expressions known to the whole of society. For example , cool cat (aloof , stylish person) , Mr. Charley (a white man) , The Man (the law) , and Uncle Tom (a meek black) all originated in the predominantly black Harlem district of New York City and have traveled far since their inception. Slang is thus generally not tied to any geographic region within a country.A slang expression may suddenly become widely used and as quickly dated (skiddoo). It may become accepted as standard speech , either in its original slang meaning (bus , from omnibus) or with an altered , possibly tamed meaning (jazz , which originally had sexual connotations). Some expressions have persisted for centuries as slang (booze for alcoholic beverage). In the 20th century , mass media and rapid travel have sped up both the circulation and the demise of slang terms. Television and novels have turned criminal cant into slang (five grand for $5000). Changing social circumstances may stimulate the spread of slang. Drug-related expressions (such as pot and marijuana) were virtually a secret jargon in the 1940s; in the 1960s they were adopted by rebe11ious youth; and in the 1970s and '80s they were widely known.26. The passage mainly discusses ( )·A. the social function of slang and jargonB. the origins of slang and its social applicationC. how jargon differs from slangD. the relationship between slang and subcultures27. With reference to the outstanding contributors to the birth of slang , the author mentions all of the followingexcept ( )A. athletesB. clergyC. doctorsD. philosophers28. The word They in para. 2 refers to ( )A. slang expressionsB. group membersC. attitudes and valuesD. the speakers29. Slang expressions contribute toA. the identification of individuals speech patternsB. the basic lifestyle. of a certain groupC. the identity of people as individualsD. the identification of a social group30. Which of the following , according to the passage , contributed to accelerating the metabolism (新陈代谢) of slang expressions in the 20th century ?A. Newspapers and magazinesB. Rebellious youthC. Religious denominationsD. Drug--users
（）淄川何山的海市蜃楼十分有名？
下颌恒磨牙开髓部位应在面偏向颊尖处因为()上颌前牙开髓时应从舌面窝中央向牙颈方向钻入，因为()上颌前磨牙开髓时要防止从近中面或远中面穿孔，因为()下颌切牙根管治疗时应防止侧穿根管壁，因为()下颌第一恒磨牙开髓时应防止穿通髓室底，因为()