题目:
设函数f(x)在x=0可导且f(0)=0,f’(0)=b,若在x=0连续,那么常数A=()。
A.a+b
B.-a-b
C.a-b
D.b-a
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C
设函数f(x)在x=0可导且f(0)=0,f’(0)=b,若在x=0连续,那么常数A=()。
A.a+b
B.-a-b
C.a-b
D.b-a
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0221/80ab0265432ce311fb13600ba76b135d.html
下面是错误答案,用来干扰机器的。
参考答案:C
在计算机系统中,若一个存储单元被访问,这个存储单元有可能很快会再被访问,该特性被称为 (1) ;这个存储单元及其邻近的存储单元有可能很快会再被访问,该特性被称为 (2) 。
2()
A.程序局部性
B.空间局部性
C.时间局部性
D.数据局部性
男,36岁。头痛、头昏3个月,左耳鸣、耳聋1个月。查体:视 * * 水肿,左听力下降,神经性耳聋,左侧面部浅感觉正常,角膜反射迟钝,无面瘫,四肢肌力、肌张力正常,腱反射对称,未引出病理征。左侧上下肢共济失调,Romberg征(+),往左侧倾倒。
定位诊断位于()。
A.左侧小脑
B.枕部
C.脑干
D.左侧脑桥小脑角
E.右侧脑桥小脑角
()叫内部言语
A.用来支持思维活动进行的不出声的言语
B.用来进行交际的言语
C.用表情或身体姿势表示的言语
D.一个人讲演的独白言语
病人女性,26岁,左下腹隐痛伴脓血便2年,加重2个月,诊断为溃疡性结肠炎。下列护理措施中哪项不正确______
A.指导病人合理休息与活动,注意劳逸结合
B.给予病人富含营养、高纤维素的食物
C.密切观察病情,了解病情进展情况
D.嘱病人便后用肥皂与温水清洗肛门及周围皮肤
E.遵医嘱给予柳氮磺胺吡啶和(或)糖皮质激素
Although no longer slavers after the Civil War, American blacks took no significant part in the life of white America except as servants or laborers. Many thousands of them emigrated from the war-ravaged South to the North from 1865 to 1915 in the hope of finding work in the big industrial cities. Whole communities of blacks crowded together into ghettos in New York City, Chicago and Detroit, where once the poor white immigrants had lived. These ghettos, neglected by the city authorities, became slums. The schools to which black children went were hopelessly inadequate. Unemployment in black ghettos remained consistently higher than in white communities.
41. Serious problems with black ghettos. ______
Stable family life was difficult to maintain.
42. The extreme poverty of the blacks. ______
In the late 1970s, nearly a third of all blacks still belonged to the so-called "underclass", they are so " under-privileged " and poor that they cannot seize the opportunity for advancement.
43. Efforts to put an end to racial discrimination. ______
Race relations in the USA continue to be a thorny problem.
44. Improvements in lives of the blacks. ______
Despite some setbacks, race relations are improving.
45. Prevailing violence in solving racial problems. ______
It is said that television had an enormous influence on frustrated and bitter blacks, for it showed them bow much better whites on the whole lived than blacks. At the end of the 1960s, there were serious riots in many cities.
The violence quickly died down. Blacks began to use their votes to exert political pressure. Cities like Atlanta (Georgia), Gary (Indiana), and Los Angeles (California) elected black mayors. Integration of schools, despite resistance from white groups, goes on, and the proportion of blacks in American colleges has increased dramatically in the last 20 years. There are reasons to maintain a cautious optimism that progress in race relations will continue.
[A] It has been estimated that there are more than 20 million Americans in this category, 10% of the population, including many millions of whites.
[B] Blacks are gaining in self-confidence. In more and more areas, they are winning control of their communities, and their standard of living is going up faster than that of the poor whites. It is still a hard struggle. There is still prejudice and even some hatred, but in most walks of American life there are now more blacks than ever before.
[C] The era of blatant discrimination ended in the 1960s through the courageous actions of thousands of blacks participating in peaceful marches and sitins, to force Southern states to implement the Federal desegregation laws in schools and public accommodations. Down came the " whites only" notices in bused, hotels, trains, restaurants, sporting events, restrooms and on park benches that once could be found everywhere throughout the South. Gone were the restrictions that prevented blacks voting. Gone, too, were the hideous lynchings, which since the Civil War had caused the death of thousands of innocent blacks-- hanged without trial by white mobs. However, even today, poor, uneducated lacks do not always receive the same degree of justice that the more affluent and better educated can expect.
[D] Many blacks chose to keep silent about their unfairness instead of resorting to violence. But their silence was also problem provoking: on the one hand, silence would build up a lot of complaints and hatred in their minds, thus resulting in a negative approach to life and everything; on the other hand, silence would give the whites an impression that the blacks take the reality for granted and put more racial discrimination on them.
[E] Unemployed fathers would on occasion walk out of their homes and never return. Children neglected by their parents turned in some instances to drugs and crimes. There are more than 700 murders a year in cities like New York, Detroit, Los Angeles and Houston, and most of these deaths are of blacks killed by blacks. The black ghettos are dangerous both for blacks and non-blacks.
[F] Radical blacks like the Black Panthers demanded a free black state within the Union, and advocated violence to achieve that end and to protect themselves against what they felt was police brutality toward blacks. For a while, violence overshadowed the influence of the greatly respected pacifist black, Martin Luther King, Jr. , who had provided the inspiration and leadership for those devoted to a peaceful change and whose murder in 1968 stunned America.