热门试题:
[单项选择]DNA的一级结构是指()
A. 多聚A结构
B. 核小体结构
C. 双螺旋结构
D. 核苷酸排列顺序
E. 多聚P结构
[多选题]当没有设备进行传输,所有设备都处于( )状态的时候,RS-485网络中会出现( )状态,这将导致所有的驱动器 进入高阻态,使悬空状态传回所有的RS-485接收端。
A.监督
B.监听
C.二态
D.三态
[单选题]沉降及徐变观测点采用高精度水准仪进行观测,要求测量精度为 mm,读数取位至 mm。
A.A.1,0.1
B.B.1.5,0.15
C.C.2,0.2
D.D.2.5,0.25
[单选题]在电子邮件中所包含的信息( )。
A.只能是文字
B.只能是文字与图形图像信息
C.只能是文字与声音信息
D.可以是文字、声音和图形图像信息
[判断题]禁止在铁路线路安全保护区内烧荒、放养牲畜、种植影响铁路线安全和行车瞭望的树木等植物。
A.正确
B.错误
[单项选择]建立原型目的不同,实现原型的途径也有所不同,指出下列不正确的类型( )。
A. 用于验证软件需求的原型
B. 垂直原型
C. 用于验证设计方案的原型
D. 用于演化出目标系统的原型
[单项选择]企业应当根据固定资产的性质和使用情况,合理确定固定资产的使用寿命,主要考虑的因素不包括的是( )。
A. 预计生产能力和实物产量
B. 预计有形损耗和无形损耗
C. 预计资产改扩建支出
D. 法律或者类似规定对资产使用的限制
[单选题].肠梗阻的局部病理改变不包括
A.肠壁坏死穿孔
B.肠壁充血水肿
C.肠腔膨胀、积气积液
D.肠蠕动变化
E.体液丧失
[单项选择]男性,43岁。3小时前呕血1次,自觉头晕、乏力、出汗。查体:心率110次/分,四肢湿冷,肝掌,腹壁静脉曲张,超声示腹水。关于该患者的黄疸,下述正确的是()
A. 肤色暗黄色
B. 皮肤发痒,多早于黄疸
C. 可出现发热、腰痛
D. 脂蛋白X阳性
E. 尿胆红素阳性,尿胆原常增高
[单选题]磁浮子液位计是通过磁耦合控制干簧管的通断,以改变与干簧管相连的电阻组件的()。
A.电流值
B.电压值
C.电阻值
D.功率值
[单选题]出差使用接待单位交通工具的,应当按照每半天()的标准主动交纳市内交通费。
A.20元
B.40元
C.80元
D.100元
[判断题]工作负责人和工作许可人不允许在许可开工后单方变动安全措施。( )
A.正确
B.错误
[单选题] 磁盘阵列服务器上显示有3TB空间,假设每块硬盘大小为500GB,则磁盘阵列上有几块硬盘?( )
A.4
B.5
C.6
D.7
[判断题]放喷管线转弯处只能使用角度大于120°的铸(锻)钢弯头。
A.正确
B.错误
[单项选择]下列疾病病理改变主要在肾,临床表现在膀胱的是()
A. 肾结石
B. 肾结核
C. 多囊肾
D. 肾肿瘤
E. 肾脓肿
[单项选择]对重型阿弗他溃疡,可用下列哪种药物做局部封闭()。
A. 青霉素
B. 曲安奈德混悬液,加入1%普鲁卡因0.5~1.0ml
C. 庆大霉素注射液
D. 2%四环素
E. 0.25%金霉素液
[单项选择]在WINDOWSXP环境中,屏幕上可以同时打开若干个窗口,但是()
A. 其中只能有一个是当前活动窗口,它的标题栏颜色与众不同
B. 其中只能一个在工作,其余都不能工作
C. 它们都不能工作,只有其余都关闭、留下一个才能工作
D. 它们都不能工作,只有其余都最小化以后、留下一个窗口才能工作
[判断题]在有瓦斯或煤尘爆炸危险的采掘工作面,应采用瞬发电雷管或毫秒延期电雷管爆破。 ( )
A.正确
B.错误
[单项选择]
Because agriculture is so important to a nation’s well-being, governments have always been concerned with it. For example, the United States and Canada have long produced surpluses that complicate their economies. Surpluses tend to lower prices to farmers and seriously endanger the agriculture industry. Governments have instituted systems of price supports to maintain a fair price when surpluses cause prices to drop. The system in the United States is a good example. A government program supports the prices paid to farmers for grains, and other agricultural products.
Support prices are based on parity, which is the ratio between the prices farmers receive for their crops and the prices they must pay for things they need. The government selected the period from 1910 to 1914 as a time when farm prices were in a fair ratio with farming costs. This is the base period now used to determine parity prices.
The idea is to assure farmers that what they get for a bush
A. Because farm prices go up and down constantly.
B. Because farmers usually earn less than other income groups.
C. Because there is not much arable farmland left.
D. Because farmers are confronted with fiercer competition.
[多选题]根据《食品安全法》规定,海关应当对进出口食品的____实施信用管理,建立信用记录,并依法向社会公布。
A.进口商
B.进口食品分销商
C.出口食品生产企业
D.出口商
[单项选择]假设给定一个十进制整数D,转换成对应的二进制整数B,那么就这两个数字的位数而言,B与D相比( )。
A. ( B的数字位数一定大于D的数字位数
B. ( B的数字位数一定小于D的数字位数
C. ( B的数字位数一定不小于D的数字位数
D. ( B的数字位数一定不大于D的数字位数
[简答题]
某工程各工作之间的逻辑关系及工作持续时间如表4-3所示。
表 4-3
工作名称 |
紧前工作 |
紧后工作 |
持续时间 |
A |
— |
B、C、D |
2 |
B |
A |
E、G |
4 |
[单项选择]
Text 2
Everyday some 16m barrels of oil leave the Gulf through the Strait of Hormuz. That is enough to fill a soft-drink can for everyone on earth, or to power every motor vehicle on the planet for 25 miles (40kin). Gulf oil accounts for 400//oo of global trade in the sticky stuff. More important, it makes up two-thirds of known deposits. Whereas at present production rates the rest of the world’s oil reserves will last for a mere 25 years, the Gulf’s will last for 100. In other words, the region’s strategic importance is set to grow and grow.
Or at least so goes the conventional wisdom, which is usually rounded out with scary talk of unstable, spendthrift regimes and a looming fundamentalist menace. Yet all those numbers come with caveats. A great deal of oil is consumed by the countries that produce it rather than traded, so in reality the Gulf accounts for less than a quarter of the world’s daily consumption. As for reserves, the
A. The people in the Gulf would not benefit in certain ways.
B. The Gulf countries are incomparable to the county Swiss.
C. Continued oil consumption will create high price pressures.
D. Oil reserves will continue to be a supply of resources.
[单选题]()明确列车技术质量抽查及检查指导的具体标准及实施办法,定期对发现的问题进行分析、上报,提出整改措施。
A.总结计划制度
B.列车技术质量抽查及检查指导制度
C.交接班制度
D.岗位责任制度
[单项选择]One of the questions that is coming into focus as we face growing scarcity of resources of many kinds in the world is how to divide limited resources among countries. In the international development community, the conventional wisdom has been that the 2 billion people living in poor countries could never expect to reach the standard of living that most of us in North America enjoy, simply because the world does not contain enough iron ore, protein, petroleum, and so on. At the same time, we in the United States have continued to pursue superaffluence as though there were no limits on how much we could consume. We make up 6 percent of the world’’s people; yet we consume one-third of the world’’s resources.
As long as the resources we consumed each year came primarily from within our own boundaries, this was largely an internal matter. But as our resources come more and more from the outside world, "outsiders’’’ are going to have some say over the rate at which and terms under which
A. the U. S. will be isolated if it clings to pursuing superaffluence.
B. the poor countries will no longer supply the U. S. with materials.
C. the Americans should care about the well-being of other nations.
D. the U. S. is to aid the poor countries in their economic growth.
[单选题]可双眼追视,范围达180°的时间大约是:
A.2个月
B.3个月
C.4个月
D.5个月
E.6个月
[单选题](37288)( )不能隔离内端门。(1.0分)
A.通过锁闭三角锁使门系统隔离
B.通过开关释放按钮使门系统隔离
C.通过黄色的隔离开关使门系统隔离
D.通过操作门控单元上的开关使门系统隔离
[判断题]增值性物流服务的本质特征是创新、超常规和满足客户的需要。()
[单选题]有关肝性脑病,正确的治疗是( )。
A.患者躁狂不安时使用水合氯醛灌肠
B.肥皂水灌肠清除肠腔积血
C.静脉使用甲硝唑抑制肠道细菌的生长
D.低蛋白饮食
E.口服乳果糖
[不定项选择题]A.合点
A.朱砂点
B.吃青角
C.同心鳞片
D.出枪老茸
E.鹿角自然脱落于山地,被青草覆盖,受风雨潮湿的摧残、侵腐的角称为
[单选题]在线路上使用车梯作业时,车梯上的作业人员不得超过 人。
A.4
B.3
C.2
D.5
[判断题] 在土质疏松的地方, 抱杆脚应用浮土垫牢。 ( )(1.0分)
A.正确
B.错误
[多选题]纳税人应当向应税污染物排放地的税务机关申报缴纳环境保护税,下列属于应税污染物排放地的有( )。
A.应税大气污染物排放口所在地
B.应税水污染物排放口所在地
C.应税固体废物产生地
D.应税噪声产生地
E.排放应税大气污染物的企业总部所在地
[多选题]镇总体布局的影响因素包括()
A.现状布局、建设条件
B.资源环境条件、对外交通条件
C.绿化景观条件、基础设施配置
D.城镇性质、发展机制
E.历史文化底蕴
[单项选择]下列哪种疾病不属于风湿性疾病的范畴()
A. 系统性红斑狼疮
B. 干燥综合征
C. 骨关节炎
D. 特发性血小板减少性紫癜(ITP)
E. 强直性脊柱炎
[多项选择]
患者男性,68岁,2年前诊断肺心病。1周来咳嗽、咳痰、喘息加重伴双下肢水肿。查体:神志清,双肺可闻及湿啰音,心率100次∕分,律齐。肝肋下2.5cm,质软。双下肢水肿。血常规:白细胞计数及中性粒细胞分类均增高。血气分析:pH7.335,PaO250mmHg,PaCO278mmHg,HCO3-34mmol∕L。
患者经氧疗、控制感染、解痉平喘等治疗后病情有好转,但出现尿量减少,伴颈静脉怒张、下肢水肿加重,考虑心力衰竭无改善,需应用正性肌力药,正确的叙述是()
A. 剂量宜小
B. 应用前应注意纠正缺氧和低血钾
C. 患者心率120次∕分时应用
D. 宜选用作用快、排泄快的洋地黄类药物
E. 可合并应用利尿剂
F. 以右心衰竭为主要表现合并严重感染的患者
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