热门试题:
[判断题]自动闭塞区间发车进路上的道岔区段出现红光带，故障道岔开通位置不在进路所需位置时，现场人工准备进路并加锁。
A.正确
B.错误
[单选题]合同是当事人之间设立、变更、终止民事关系的( )。
A.承诺
B.协议
C.约定
D.证据
[判断题]1 公称外径小于100mm的燃气用聚乙烯管材、管件和阀门的连接应采用电熔连接。
A.正确
B.错误
[判断题]自动闭塞区段，连续式机车信号机显示一个红色灯光，表示列车接近的地面信号机显示红色灯光。（ ）
A.正确
B.错误
[单项选择]在VisualFoxPro中，保存过程与函数的文件的扩展名为（）。
A. .proc
B. .prg
C. .exe
D. ，app
[单选题]CR400AF动车组受电弓更换时，用扭力扳手紧固绝缘子M16螺母，紧固扭力：（）N·m。
A.135±4%
B.135±5%
C.145±4%
D.145±5%
[单选题]直营店负责人应在( )个工作日内将财产物品移交营销部保管、处理,并在《顾客财产登记表》上予以记录。
A.两
B.三
C.四
D.五
[不定项选择题]A.静脉注射给药
A.吸入给药
B.皮肤给药
C.直肠给药
D.口服给药
E.首关消除较明显的固体药物适宜
[单选题]下列各项中,影响长期股权投资账面价值增减变动的是 ( )。
A.采用权益法核算的长期股权投资,持有期间被投资单位宣 告分派股票股利
B.采用权益法核算的长期股权投资,持有期间被投资单位宣 告分派现金股利
C.采用成本法核算的长期股权投资,持有期间被投资单位宣 告分派股票股利
D.采用成本法核算的长期股权投资,持有期间被投资单位宣 告分派现金股利
[单选题]“十四五”是碳达峰的关键期、窗口期，要重点做好以下几项工作：构建清洁低碳安全高效的能源体系，控制化石能源总量，着力提高利用效能，实施可再生能源替代行动，深化电力体制改革，构建以（ ）为主体的新型电力系统。
A.非化石能源
B.可再生能源
C.清洁能源
D.新能源
[判断题]精密进近复飞点通常情况设在最低安全高/高度与下滑道的交点处。
A.正确
B.错误
[判断题]（类别：号段管理难度：中等）因为云联网的多云预接入优势，云间互联场景可以实现快速开通部署。（）
A.正确
B.错误
[填空题]桥式起重机的主要技术参数：()、()、()、()、()。
[单选题]肝硬化上消化道出血导致肝性脑病的主要机制是
A.肠道积血致血氨增高
B.微循环障碍
C.肝缺血缺氧
D.脑缺血缺氧
E.肾脏血流量减少
[多项选择]在下列（）情况下尤其应该注意瓦斯涌出量的变化，以确保安全生产。
A. 开采遇地质构造
B. 地面大气压明显变化
C. 工作面开采接近结束时
D. 顶板来压
E. 以上都是
[判断题]轨道电路就是把线路上的两股钢轨当导线用，在它的两端用绝线物隔断与邻接钢轨的电气联系，一端接上电源设备供电，另一端装上电源的接受设备（轨道继电器），构成电气回路。( )
A.正确
B.错误
[单项选择]股东大会做出普通决议必须经出席会议的股东所持表决权的（）通过。
A. 过半数
B. 1/3
C. 213
D. 全数
[单项选择]由于公司首选供应商工厂爆炸，供应商通知项目经理，为项目订购的产品不能按时交付，由于这些产品可以容易地找到其他产品替换，项目经理使用了风险管理计划中说明的备选供应商，这属于下列哪一项？ （）
A. 应急计划
B. 应急补救
C. 权变措施
D. 弹回计划
[填空题]1 CSCF信令跟踪包括按链路跟踪、按用户跟踪、（ ）等信令跟踪方式。
[单选题] 年春季在我国发生一种传染性非典型肺炎，世界卫生组织将其命名为严重急性呼吸道综合征，初步认定的病原体是
A. 病毒
B. 细菌
C. 军团菌
D. 衣原体
E. 新型冠状病毒
[单选题]货物系固手册是由______根据船舶的实际情况按公约要求编写的。
A.大副
B.船公司
C.主管机关
D.船级社
[判断题]必热送钢种T坯发现有缩孔时为保证快速出库可不切割直接出库。
A.正确
B.错误
[多项选择]下列哪些易发生产后出血（）
A. 继发性宫缩乏力
B. 羊水过多
C. 重度子痫前期
D. 妊娠合并肝炎
E. 双胎妊娠
[单选题](____)重要电力客户，按照供电负荷重要性，在条件允许情况下，可以通过临时架线等方式具备双回路或两路以上电源供电条件。
A.特级
B.一级
C.二级
D.临时性
[单选题]抽完烟的烟头应投入( )
A.蓝色垃圾桶
B.绿色垃圾桶
C.灰色垃圾桶
D.红色垃圾桶
[判断题]无线调车灯显设备正常使用时应与调车手信号配合使用。 ( )
A.正确
B.错误
[判断题]载流导体的热稳定性是指载流导体耐受短路电流热效应而不致损坏的能力。
[填空题]You should spend about 20 minutes on Questions 14-26, which are based on
Reading Passage 1 below.
You Are Here: How Digital Maps Are Changing the Landscape of
the 21st Century
A Buried beneath
November’s headlines depicting rising tensions on the Korean Peninsula, European
economic woes, and the disclosure of confidential State Department cables, a
meaningful geopolitical event went largely overlooked: Nicaragua invaded Costa
Rica. There was no shooting war and the incident involved only a small swath of
disputed territory along the San Juan River, part of which divides the two
nations. But a Nicaraguan commander added an interesting wrinkle to the
narrative when he dragged an unlikely culprit into the dispute: Google. The
commander cited Google Maps, which had erroneously depicted a stretch of the
border in Nicaragua’s favour by as much as 1.7 miles. Google quickly moved to
amend the faulty border data and sportingly apologised.
B
The incident raises some interesting issues concerning the future of mapmaking
that, thus far, our brave new digital world hasn’t yet been forced to confront.
Whereas cartography—particularly the act (or the art) of drawing political lines
on geographical charts—used to be the purview of nations and international
bodies, commercial entities like Google, Bing, Mapquest, and other digital
services are the principal mapmakers of the 21st century.
C Orbiting GeoEye satellites and camera-equipped Google sedans are the
Magellans of the digital age, dispatched to explore and catalogue—and most
importantly make public—unprecedented amounts of geographical data via the Web.
If anyone wants to locate anything—be it a coffee house, a post office, or an
international boundary users log into Google or Bing, not the U.N. or the U.S.
Geological Survey (USGS). But these commercial maps are compiled from a variety
of sources and often blend government-derived mapping data with user-generated
content. As such, they are subject to conflicting information, differences of
political opinion and—as the Nicaraguan incident shows—outright error.
D ’With a lot of these web-based tools, the need for formal
training in cartography is going away, and that’s both a good thing and a bad
thing,’ says Dr. Brian Tomaszewski, an assistant professor in the Department of
Information Sciences & Technologies at the Rochester Institute of
Technology. It’s good because it creates rich, centralised data compilations
that users constantly update. But before that can happen, someone like Google
has to build the underlying map, and there’s no single source or authority for
global map data to draw from. That leaves companies in the unenviable position
of trying to pick and choose the best data and massage it to fit a single
geographical template.
E In the case of Nicaragua, it
turns out that data was simply incorrect. A post on Google’s ’Lat Long Blog’
explained the error: ’Yesterday we became aware of a dispute that referenced the
border between Costa Rica and Nicaragua as depicted on Google Maps. This
morning, after a discussion with the data supplier for this particular border
(the U.S. Department of State), we determined that there was indeed an error in
the compilation of the source data, by up to 2.7 kilometres.’
F Viewed on Google Maps, however, an incorrect border looks like any other
border, and if the U.S. State Department (and, more importantly, Google) says
the border is in one place, who is Costa Rica to say it’s not In strict
cartographic sense, the treaty that originally established the border is the
final word. But no one locates a border by reading a 150-year-old treaty; people
find borders by looking at maps, and in the 21st century people consult maps by
opening their Web browsers.
G ’We look at the computer
and say "how can it be wrong, it’s on the computer",’ says Dr. Frank Galgano,
professor and chairman of Villanova University’s Geography and the Environment
Department. It’s to the computer that the world increasingly turns to find just
about everything, lending digital mapmakers incredible power to shape users’
geospatial perceptions.
H What’s largely missing is the
healthy skepticism that users apply to other piecemeal compendia of information
like Wikipedia, Galgano says. Google knows its maps contain errors; it says so
in the user agreement (you read that closely, didn’t you). For those people
searching for the nearest Starbucks in Manhattan these errors are largely
negligible. But for an American hiking near the Iranian border, they can lead to
miscalculations with serious consequences.
I ’People are
forgetting to use common sense and critical thinking,’ Tomaszewski says. ’Google
Maps isn’t an official mapping agency like a government. They buy or acquire
data and then assemble it into a map. It’s almost frightening to think that
militaries or governments might rely on Google as the final word on boundaries
or borders between nations.’
J But there are a variety of
reasons why a government or military might do so, not least of which is the lack
of anything better. In the United States, the USGS maintains an extensive
collection of publicly available map data accurate down to about 130 feet. Many
other nations treat their official maps as state secrets. Still others don’t
have the resources to produce accurate maps at all. That makes commercial,
publicly available maps like Google’s very attractive, if not any more
authoritative.
K Why Nicaragua chose to use a Google Map
to justify military actions along a tense border is something for the geopolicy
wonks to debate. Regardless, the incident embodies the changing nature and
impact of cartography in a rapidly digitising environment. After all, borders
are nothing more than imaginary lines enforced by mutual agreement. Cartography
is inexact enough already, and the blurring line between ’official’ cartography
and commercial maps rich in content but low in complexity further compounds that
lack of concreteness.
L That’s not to say commercial maps
don’t carry tremendous value. Their accessibility has revolutionised the way
people use maps, particularly as they pertain to commerce. The economic
importance of being ’on the map’ may not be outwardly apparent, but consider the
case of Sunrise, Fla.; the community of 90,000 has inexplicably disappeared from
Google Maps three times since August of last year. During these ’blackouts’,
local businesses reported flattening commerce as new customers couldn’t locate
them. Online orders ground to a halt for some businesses. After all, how would
anyone find a florist or automotive shop that’s not searchable When Sunrise
disappeared from Google Maps, it might as well have disappeared
completely.
M So what makes a real map in the 21st
century Some would argue that the musty old analogue maps tucked into national
archives around the world are still the real deal, invested with the authority
of governments. But if asked which is more important to their everyday lives,
the citizens of Sunrise, Fla., might argue that commercial maps, regardless of
inaccuracies or oversimplifications, represent a far greater social and economic
utility. To the average person, commercial maps like those compiled by Google,
Bing, or Yahoo have become at least as equally important as their ’official’
counterparts.Google collects geographical data by GeoEye.
[单项选择]患者，男性。头部重物击伤后6小时入院，患者伤后有短暂昏迷，而后出现"中间清醒期"，1小时前又出现神志不清。考虑以下诊断可能性最大的是（）
A. 硬膜外血肿
B. 硬膜下血肿
C. 脑内血肿
D. 脑震荡
E. 脑挫裂伤
[简答题]请编制程序，要求：将文件IN91.DAT中的200个整数读入数组xx中，求出数组xx中奇数的个数cnt1和偶数的个数cnt2，以及数组xx下标为偶数的元素值的算术平均值pj(保留2位小数)，结果cnt1，cnt2，pj输出到out91.dat中。
部分程序、读函数read_dat(int xx[200])及输出格式已给出。
试题程序：
#include＜conio.h＞
#include＜stdio.h＞
#define N 200
void read_dat (int xx[N])
{
int i,j;
FILE *fp;
fp=fopen ("IN91.DAT", "r");
for (i=0;i＜20;i++)
{
for (j=0; j＜10; j++)
{
fscanf (fp, "%d, ", &xx [i*10+j]);
printf ("%d", xx [i*10+j]);
}
printf ("/n");
}
fclose (fp);
}
void main （ ）
{
int cnt1,cnt2,xx[N];
float pj;
FILE *fw;
int i, k=0;
long j;
clrscr （ ）;
fw=fopen ("out91.dat", "w");
read_dat (xx);
printf ("/n/ncnt1=%d, cnt2=%d,pj=%6.2f/n", cnt1, cnt2, pj);
fprintf (fw, "%d/n%d/n%6.2f/n", cnt1, cnt2,pj);
fclose (fw);
[判断题]信号微机监测系统轨道电路监测电压量程为0~40V。( )
A.正确
B.错误
[单选题] 已知：C(S)+O2(g)＝CO2(g)+393．5 kJ,则燃烧1吨碳能产生( )热量。
A.393．5kJ
B.393．5*106kJ
C.32．8kJ
D.32．8*106kJ
[判断题]有限空间中，当救援行动中断后，再次进入有限空间前无需进行气体检测。
A.正确
B.错误
[多选题]商业银行应当严格执行“（）”三分管制度。
A.印
B.押
C.证
D.合同
[判断题]《上海铁路局普速旅客列车“三乘检查”管理办法》（上铁客〔2017〕396号）规定：对长途套用短途交路或者管内多趟短途交路套用的情况，原则上一整个乘务交路“三乘检查”次数不少于两次。
A.正确
B.错误
[多选题]对未取得安全生产许可证擅自进行生产的企业，政府有关部门可以实施的行政处罚有（ ）。
A.警告
B.责令停止生产
C.没收违法所得
D.处违法所得1倍以上5倍以下的罚款
