题目详情
题目详情:

[单项选择]对血脑屏障的叙述正确的是( )
A. 血—脑脊液屏障是脑表面的动脉与脑脊液之间的屏障
B. 维持脑血管压力的稳定
C. 维持脑脊液成分的稳定
D. 维持神经元微环境的稳定
E. 血—脑屏障是血液与脑表面之间的屏障

热门试题:

[单选题]职业病危害项目实行( )制度。用人单位设有依法公布的职业病目录所列职业病的危害项目的,应当及时、如实向卫生行政部门申报,接受监督。
A.申报
B.审批
C.许可
D.备案
[不定项选择题]大气环境影响评价中,三级评价的附图不包括()。
A.污染源点位及环境空气敏感区分布图
B.基本气象分析图
C.常规气象资料分析图
D.复杂地形的地形示意图
E.污染物浓度等值线分布图
[单项选择]可兴奋细胞受阈下刺激时,可出现
A. 负后电位
B. 阈电位
C. 锋电位
D. 局部电位
[单选题]CPU即中央处理器,包括( )。
A.控制器和存储器
B.内存和外存
C.运算器和存储器
D.运算器和控制器
[单选题]箱式变电站从铁路沿线的一级负荷贯通线和综合贯通线各引入一回10kV电源至箱变内的高压环网柜,再通过( )将其降压至0.4/0.23kV,就近向沿线区间通信、信号基站提供两路可靠的0.4/0.23kV电源。
A.互感器
B.变流器
C.变压器
D.电抗器
[单项选择]美国国防部安全标准定义了4个安全级别,其中最高安全级提供了最全面的安全支持,它是 _______。
A. A级
B. B级
C. C级
D. D级
[单选题]消防轻型安全绳在库内存放时,要放置在阴凉、通风处,并且按要求( ),扎牢。(易)
A.使用
B.装饰
C.盘好
D.散放
[单项选择]Income
Income may be national income and personal income. Whereas national income is defined as the total earned income of all the factors of production--namely, profits, interest, rent, wages, and other compensation for labor, personal income may be defined as total money income received by individuals before personal taxes are paid. National income does not equal GNP (Gross National Product) because the factors of production do not receive payment for either capital consumption allowances or indirect business taxes, both of which are included in GNP. The money put aside for capital consumption is for replacement and thus is not counted as income. Indirect taxes include sales taxes, property taxes, and excise taxes that are paid by businesses directly to the government and so reduce the income left to pay for the factors of production. Three-fourths of national income goes for wages, salaries, and other forms of compensation to employees.
Whereas national income shows
A. the money earned.
B. the money not earned but received.
C. the money received for the contribution you have made to the economy.
D. the money earned for the service you have furnished to the economy.
[判断题]敞、平车装载的易燃普通货物的隔离标记是。 ( ) 
A.正确
B.错误
[单项选择]钢的表面热处理,是改变表面层匠()。
A. 化学成份
B. 组织状态
C. 光洁度
D. 氧化铁皮
[单选题]减速地点标,距施工地点为( )。
A.100m
B.80m
C.50m
D.20m
[多选题]视频图像丢失,评判不合格的现象有( )。
A.蓝屏
B.黑屏
C.花屏,出现不规则斑块,无法识别图像
D.白屏
[多项选择]下列货物中()被列入了《禁止进口货物目录》
A. 牛角
B. 虎骨
C. 城市垃圾
D. 医疗废物
[不定项选择题]All around the world, lawyers generate more hostility than the members of any other profession—with the possible exception of journalism. But there are few places where clients have more grounds for complaint than America.  During the decade before the economic crisis, spending on legal services in America grew twice as fast as inflation. The best lawyers made skyscrapers-full of money, tempting ever more students to pile into law schools. But most law graduates never get a big-firm job. Many of them instead become the kind of nuisance-lawsuit filer that makes the tort system a costly nightmare.  There are many reasons for this. One is the excessive costs of a legal education. There is just one path for a lawyer in most American states: a four-year undergraduate degree in some unrelated subject, then a three-year law degree at one of 200 law schools authorized by the American Bar Association and an expensive preparation for the bar exam. This leaves today’s average law-school graduate with$100,000 of debt on top of undergraduate debts. Law-school debt means that they have to work fearsomely hard.  Reforming the system would help both lawyers and their customers. Sensible ideas have been around for a long time, but the state-level bodies that govern the profession have been too conservative to implement them. One idea is to allow people to study law as an undergraduate degree. Another is to let students sit for the bar after only two years of law school. If the bar exam is truly a stern enough test for a would-be lawyer, those who can sit it earlier should be allowed to do so. Students who do not need the extra training could cut their debt mountain by a third.  The other reason why costs are so high is the restrictive guild-like ownership structure of the business. Except in the District of Columbia, non-lawyers may not own any share of a law firm. This keeps fees high and innovation slow. There is pressure for change from within the profession, but opponents of change among the regulators insist that keeping outsiders out of a law firm isolates lawyers from the pressure to make money rather than serve clients ethically.  In fact, allowing non-lawyers to own shares in law firms would reduce costs and improve services to customers, by encouraging law firms to use technology and to employ professional managers to focus on improving firms’ efficiency. After all, other countries, such as Australia and Britain, have started liberalizing their legal professions. America should follow. Hindrance to the reform of the legal system originates from _____.
A.lawyers’ and clients’ strong resistance
B.the rigid bodies governing the profession
C.the stern exam for would-be lawyers
D.non-professionals’ sharp criticism
[单项选择]ACEI主要的不良反应是( )
A. 抑郁症
B. 多毛症
C. 干咳和血管神经性水肿
D. 水钠潴留
E. 眼并发症
[单项选择]性温,善益筋和血的药是()
A. 羌活
B. 防风
C. 苍术
D. 木瓜
E. 千年健
[单选题]花旗私人银行公布的《2010财富报告》指出,2009年全球百万富翁人数普遍减少,中国也不例外,富翁人数较2008年下降一成多,但尚有34万人财富“达标”,仍是全球第四大“富翁生产国”。富翁人数缩水最厉害的是印度和葡萄牙,各减少近四分之一,而智利、哥伦比亚、阿联酋等国的富翁们—抗击打能力”最强,只有2%的人士落马。 对这段话概括最准确的是()。
A.中国富翁们“抗击打能力”不够强
B.2009年中国是全球第四大“富翁生产国”,富翁人数下降一成
C.2009年全球百万富翁人数普遍缩水,中国富翁人数仍居第四
D.各国富翁的“抗击打能力”都有待提高
[简答题]根据时代不同,可将革命遗址及革命纪念地划分为哪几类?
[单选题]下列地区中,()不能办理华东三省一市银行汇票业务。
A.江苏省
B.北京市
C.浙江省
D.安徽省
[单项选择]不属于社会知觉的一项是()。
A. 对他人表情的知觉
B. 对他人人格的知觉
C. 对人际关系的知觉
D. 对自我的知觉
E. 对群体的知觉
[单选题]为确保装置油管路密封符合要求,装置法兰密封胶圈优先选用()密封结构,并严格与法兰凹槽匹配:( )
A.双线型$
B.$单线型$
C.$三线型$
D.$四线型
[单项选择]下肢大隐静脉瓣膜功能不全
A. 腹部压疼最显著的部位
B. 板状腹
C. 右下腹柔软无压疼
D. 腹胀肠鸣音消失
E. 腹式呼吸消失
[判断题]在掘进机下方进行维修作业时,一定要将履带锁固,以防下滑。()
[判断题]曲轴加工实质上属于偏心加工范围
A.正确
B.错误
[判断题]安全管理应具有 5 个基本要素:计划、组织、协调、控制、指挥。
A.正确
B.错误
[单项选择]若有以下程序
#include<stdio.h>
#define N 4
void fun(int a[][N],int b[],int flag)
int i,j;
for(i=0;i<N;i++)
b[i]=a[i][0];
for(j=1;j<N;j++)
if(flag(b[i]>a[i][j]):(b[i]<a[i][j]))
b[i]=a[i][j];


main( )
int x[N][N]=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,y[N],i;
fun(x,y,1);
for(i=0;i<N;i++)printf("%d,,y[j]);
fun(x,y,0);
for(i=0;i<N;i++)printf("%d,",y[i]);
printf("/n");

则程序的输出结果是______。
A. 1,5,9,13,4,8,12,16,
B. 4,8,12,16,1,5,9,13,
C. 1,2,3,4,13,14,15,16,
D. 13,14,15,16,1,2,3,4,
[单项选择]以下程序运行后,单击按钮输出结果是  Private Sub Commandl_Click( )    Dim x As Integer,y As Integer,z As Integer    X=4:y=2: Z=3    Call Gopd(x,x,z)    Print x;X;Z    Call Gopd(x,y,y)    Print x;y;y  End Sub  Private Sub Gopd(x As Integer,y As Integer,z As Integer)    X=3 * Z + 1    y=2 * z    z=x + y  End Sub
A. 6 6 12    7 11 11
B. 8 5 10   5 11 11
C. 9 6 12   9 10 15
D. 8 10 10   5 9 10
[单选题]某市近期由于作业人员劳动防护用品配备不到位或使用不规范造成多起事故。针对这种情况,该市安全生产监督管理局开展了一次专项执法检查。下列使用劳动防护用品的行为中,错误的是( )。
A.甲变电站巡查人员佩戴绝缘手套
B.乙建筑工地职工高处作业安全带高挂低用
C.丙汽油储罐区巡检员穿绝缘鞋作业
D.丁加油站职工戴防静电手套加油
[判断题]在地理接线图的平面绘制中,选用特定图例来表示,详细绘制出电力系统内部各发电 厂、变电站的相对地理位置,电缆、线路按地理的路径走向相连接,并按一定的比例来表 示,但不反映各元件之间的电气联系,通常和电气接线图配合使用。
A.正确
B.错误
[单选题] "伟大斗争、伟大工程、伟大事业、伟大梦想是一个紧密联系、相互贯通、相互作用、有机统一的整体,( )是主题,开辟前进道路。
A.伟大斗争
B.伟大工程
C.伟大事业
D.伟大梦想"
[单选题]()是指商业银行发行的、本金和利息的清偿顺序列于商业银行其他负债之后、先于商业银行股权资本的债券。
A.商业银行金融债券
B.证券公司金融债券
C.商业银行次级债券
D.证券公司次级债券
[判断题] 专责监护人应是具有相关工作经验,熟悉设备情况和本规程的人员。( )
A.正确
B.错误
[单项选择]清朝官员姜宸英说:“民内有耕桑之乐,外有鱼盐之资,商舶交于四省,遍于占城„„琉球诸国。凡藏山隐谷方物、镶宝可效之珍,毕至阙下,积输入于内府,于是恩贷之诏日下,„„可谓极一时之盛。”对材料解读正确的是()
A. 大臣的溢美之词不可信
B. 体现“闭关锁国”政策
C. 说明海外贸易日渐发展
D. 反映“天朝上国”观念
[单选题]某机关工作人员小肖为了便利工作,在互联网上为部门注册了一个电子邮箱,下列做法正确的是( )。
A.可以使用该邮箱发送一份标有工作秘密的通知
B.不得使用该邮箱存储、传输、处理、转发涉密信息和敏感信息
C.该邮箱为部门公用,为了方便,可将密码设为“111111”
D.除了国家秘密,其他的文件都可使用该邮箱发送
[单项选择]坚持日常学习与定期集体学习相结合的方式,每月组织收费人员不少于()集体学习,学习党和国家的方针政策、有关法律法规、上级有关的文件精神及通行费征收业务知识等相关内容。
A. 一次
B. 二次
C. 三次
D. 四次
[单项选择]新生儿出生24小时内注射疫苗是为了预防( )
A. 甲型病毒性肝炎
B. 乙型病毒性肝炎
C. 丙型病毒性肝炎
D. 丁型病毒性肝炎
E. 戊型病毒性肝炎
[单项选择] 制片剂时,处方中的淮山药、天花粉的一般处理方法为
A. 热压灭菌法
B. 流通蒸气灭菌法
C. 干热灭菌法
D. 紫外线灭菌法
E. 环氧乙烷灭菌法

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