题目详情:

[单选题]需要预防性使用抗生素的是
A.脑脊液鼻漏者
B.甲状腺手术
C.疝修补术
D.扁桃体摘除术
E.子宫肌瘤切除术

参考答案:A
术前预防性应用抗生素的指征：①污染手术，如复杂外伤、战伤、开放性骨关节伤、严重烧伤、伴溃疡坏疽的截肢术、感染性病灶（如脑脓肿）等手术和各种咬伤等；连通口咽部的颈部手术；回肠远端及结肠手术；腹部空腔脏器破裂或穿通伤；高危胆道手术；经阴道子宫切除术。②发生感染将引起严重后果者，如心脏瓣膜病或已植入人造心脏瓣膜者因病需行其他手术者、脑脊液鼻漏者以及器官移植术等。③各种人造物修补、置换或留置手术，如人工心脏瓣膜置换手术、人造关节置换术、人造血管移植术、脑室心房分流管放置术等。④手术范围大、时间长的清洁手术。

Topic: What is the most urgent issue facing the wo rld people in the 21st century State your reasons.

参考答案: [参考范文一]
What is the most urgent issue facing the world people in the BAst century
In my opinion, the most urgent problem the world people facing is education. As society develops, the development of technology, the training of professionals in various fields depend on education. Without it, there would be no civilization and modernization at all.
The BAst century is an information age. New technology determines one’s success or failure in the competitive world. If a country can’t level itself up to the leading stage of technological advance, then it will not be able to compete effectively and may fall further behind its foreign competitors. This is a world trend; no one including individual can ignore.
Computer is the brightest star in technology. It allows vastly increasing production for those who arc able to master it. But it also threatens those who fail to adopt it with permanent second-class citizenship in the world economy. So in broad sense, we may say, to master computer means the mastery of the world. And computer is a combination of arts and technology. Only through education, can we train various talented persons required. They in turn develop newfangled computers and spur our society forward.
In order to catch up with the world level, a country must quicken the steps of educational reform, especially in universities—the cradle of knowledge, the base of science, the training center of qualified persons. A large sum of funds should be invested to modernized laboratories and libraries, to introduce talented professionals, thus laying the foundation for offering advanced courses. With strong basis of education, we can stand up to whatever difficulties.
[参考范文二]
The Most Urgent Issue Facing The World People In The BAst Century
More than one billion people in the world lack access to clean water, and things arc getting worse. Over the next two decades, the average supply of water per person will ’drop by a third, possibly condemning millions of people to an avoidable premature death. Therefore, in my opinion, the most urgent issue facing the world people in the BAst century is water crisis.
Foremost, our need for water is constantly increasing due to the growth of population. As a result, water crisis threatens the world’s development and security. As the world’s population continues to expand, and climate change alters the hydrology of river basins, heightened hunger and disease will follow. Secondly, with the development of industry and agriculture, more and more water is polluted, which lead to the reduction in drinking water. Moreover, in our daily life, people waste a large quantity of water without any awareness. The deteriorating conditions of water resources may bring nations into conflicts that-although they may not lead to war-will test diplomats’ skills to the limit.
It’s not too late to mend the problem, however. To start with, the answer lies in the development and large-scale application of relatively simple technologies. Sophisticated solutions such as solar-powered desalination plants have a role to play, particularly in wealthy yet arid countries. In addition, water is a shared resource that requires global cooperation to manage appropriately. We should take every measure to prevent the extant water resources from being polluted and to make good use of water as possible as we can. How we respond to today’s water crisis will determine whether we actually know how to survive and whether we can survive and develop in a sustainable way.

第15题: [填空题]从一个站点开始发送数据到另一站点开始接收数据，也即载波信号从一端传播到另一端所需要的时间，称为（）。
参考答案:信号传播时延

第16题:[单选题]伤员脱离电源后，判断伤员有无意识应在（）s以内完成。
A.5
B.10
C.30
D.60
E.略
F.略
参考答案:B

第17题:[多选题]物流管理的基本功能可分为（　）
A.库存管理
B.订购过程管理
C.配送管理
D.仓库管理
参考答案:ABCD

第18题:[多选题]营业机构运营主管在业务审批或审核时，对业务的（）负责。
A.真实性
B.合规性
C.资料的完整性
D.要素录入的准确性
参考答案:ABC

第19题: [单项选择]无论目前浏览的网页在何处，只要按一下下列哪一个按钮即可回到主页？________
A. 后退
B. 前进
C. 停止
D. 主页
参考答案:D

第20题: [单项选择]将直流电能转换为交流电能馈送给交流电网的变流器是（）。
A. 有源逆变器
B. AC/DC变换器
C. DC/AC变换器
D. 无源逆变器
参考答案:A

第21题:[单选题]矿井主排水系统工作水泵的能力，应当能在20h内排出矿井（）的正常涌水量(包括充填水及其他用水)。
A. 20 h
B. 24 h
C.36 h
D. 48 h
参考答案:B

第22题:[填空题]两相触电是人体的两部位分别触及两根相线，这时人体承受（）的相电压，危险性比单相触电更大。
参考答案:380V

第23题:[填空题]信号机设在列车运行方向的（）侧或其所属线路的中心线上空。
参考答案:左

第24题: [单项选择]关于脾脏病变不正确的是（）。
A. 脾脓肿增强后脓肿壁明显强化，中央坏死区无改变
B. 脾脏血管肉瘤增强扫描时表现似血管瘤，先从病灶边缘强化，然后逐渐向中央充填
C. 脾脏血管瘤的增强后周围见结节状强化，并逐渐向中心填充，延迟扫描病灶大部分完全填充
D. 脾脏转移瘤增强扫描后病灶呈不均匀强化，强化程度较正常脾实质差
E. 脾梗死后增强病灶可有强化，并轮廓较平扫时清楚
参考答案:E
答案解析:脾梗死后增强病灶无强化表现，但轮廓较平扫时清楚。

第25题:[多选题]下列属于训练安全形势分析内容的是()。
A.查找责任落实存在的问题或薄弱环节
B.查找人员编配存在的问题或薄弱环节
C.查找学习训练存在的问题或薄弱环节
D.查找装备维保存在的问题或薄弱环节
参考答案:ABCD

第26题:[单选题]闸门在吊起状态下，可以进行气割、焊接及其他降低闸门金属结构强度的检修工作。
A.A.正确
B.B.错误
参考答案:B

第27题:[判断题]在法定继承中，被继承人的子女先于被继承人死亡时，由被继承人的子女的晚辈直系血亲代替继承其应继承份额的法律制度称为代位继承。
A.正确
B.错误
参考答案:A

第28题: [判断题]出票人在票据上的记载事项不得有《票据法》和《支付结算办法》规定事项以外的其他事项。
参考答案:错

第29题:[单选题]警冲标应设在两会合线路线间距为(　　)的中间。
A.4m
B.4.2m
C.4.5m
D.5m
参考答案:A

第30题:[单选题]为人民服务是党的根本宗旨，以人为本，（）是检验党的一切执政活动的最高标准。
A.执政为民
B.依靠人民
C.加快发展
D.造福于民
参考答案:A

第31题:[单选题]焊接人员离开现场前，应检查并确认现场无（）留下。
A.火种
B.工具
C.废料
D.焊接设备
参考答案:A

第32题: [单项选择]（）段誉说什么也不肯和龚光杰比武的主要原因是什么？
A. 根本不会
B. 怕输
C. 怕痛
D. 怕死
E. 以上均是
参考答案:E

第33题:[单选题]下列关于电脑角膜曲率计结果说法错误的是？图
A.图中右眼水平方向曲率为42.50D 7.4MM
B.图中右眼平均曲率为43.00D 7.85MM
C.图中右眼散光为-1.00
D.图中左眼水平方向曲率为42.87D 7.87MM
参考答案:D

第34题:[判断题]在线岔的交叉点处，正线或重要的接触线要在下方，侧线上下活动间隙为0～3mm。( )
A.正确
B.错误
参考答案:B

第35题:[判断题]焊接电弧是一种气体放电现象，当电源两端分别与被焊零件和焊枪相连时，在电场的作用下，电弧阴极产生电子发射，阳极吸收电子，电弧区的中性气体粒子在接受外界能量后电离成正离子和电子，正负带电粒子相向运动，形成两电极之间的气体空间导电过程，借助电弧将电能转换成热能.机械能和光能。（易）
A.正确
B.错误
参考答案:A

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[单选题]需要预防性使用抗生素的是A.脑脊液鼻漏者B.甲状腺手术C.疝修补术D.扁桃体摘除术E.子宫肌瘤切除术

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[单选题]需要预防性使用抗生素的是
A.脑脊液鼻漏者
B.甲状腺手术
C.疝修补术
D.扁桃体摘除术
E.子宫肌瘤切除术