热门试题:
[单选题]在现场作业中，把自控、（ ）、他控、联控作业的执行作为实现安全风险全过程控制的重要手段。
A.互控
B.违章
C.施工
D.安全
[单选题]商品的社会属性是指（ ）
A.使用价值
B.价值
C.交换价值
D.抽象劳动
[判断题]作业过程中，监护人、接收人不得随意更换或离开现场。
A.正确
B.错误
[单项选择]盐酸小檗碱与下列哪项叙述不符
A. 为异喹啉类化合物
B. 有三种形式存在，其中季铵碱式能溶于水
C. 小檗碱多以醇式存在
D. 被高锰酸钾氧化生成小檗酸、小檗醛
E. 游离碱遇酸时，促使部分醇式和醛式体转变为季铵式
[判断题]分工界面规定，③、④号在检查各自侧驱动装置齿轮箱时，与齿轮箱连接的牵引电机归齿轮箱检查侧作业人员检查，另一个作业人员仅需检查牵引电机非驱动端；③、④号地沟作业，前后距离原则上可以超过3米；
A.正确
B.错误
[判断题]停车信号的手信号显示收回时机是列车、调车列减速时。（ ）
A.正确
B.错误
[单项选择]Many IQ tests show that there are no significant differences in the mean, or average scores of IQ tests between men and women. When a new IQ test, is being constructed, it is quite easy to find test (51) that are not answered correctly (52) the same proportions of men and women, (53) these are usually then eliminated from the test. So, to some (54) the fact that no differences are to be found in our current IQ tests between the (55) for the two sexes is hardly surprising.
There are, (56) , differences in the standard deviations(偏差)or variability of the (57) of the two sexes in many IQ tests, (58) men showing the greater variation. The (59) of many IQ test scores are such (60) they approximate to the normal curve(正规曲线). If we regard some arbitrary lower score on a test as a classification like "educational subnormal(智力上逊常的人)" (ESN) and some equally arbitrary (61) score as "gifted", we then find that there
A. extent
B. case
C. time
D. occasion
[单项选择]下列关于原材料供应条件分析的说法，不正确的是（）。
A. 原材料的供应不应包括在加工过程中的物料损耗量
B. 需进口的原材料应注意今后的汇率和税率变化
C. 原材料供应来源的可靠性直接关系到项目成本及经济规模
D. 应估计原材料的供应价格弹性和互补性
[单项选择]男性，20岁，踢足球时右膝摔伤，8周后仍疼痛。查体：右膝肿胀，浮髌试验阳性，前抽屉试验阳性，侧方应力试验阴性。最可能的诊断是什么（）
A. 前交叉韧带损伤
B. 后交叉韧带损伤
C. 外侧副韧带损伤
D. 内侧副韧带损伤
E. 外侧半月板损伤
[单项选择]孙女士，26岁初产妇，因宫缩乏力而以胎头吸引术结束分娩，产程26小时，产后3天发烧，T38.6℃，下腹痛，恶露脓血性，臭味，宫底近脐平，压痛(±)诊断为产褥感染住院。该产妇感染的主要诱因是
A. 滞产
B. 胎头吸引术
C. 失血过多
D. 营养不良
E. 贫血
[多项选择]发动机润滑油所起的作用是（）。
A. 密封
B. 清洗
C. 润滑
D. 冷却
E. 减振
[单项选择]David Blume, a 48 year-old seafood retailer from Bloomfield Hills, Mich., feels guilty about the gas he burns during his 60-mile roundtrip commute—up to a point. "I’m all for saving the environment, but my first priority is putting my kid through college," says the father of a high-school senior. "I won’t even consider a hybrid unless gas prices change dramatically again."
Such sentiment could pose a major problem for beleaguered (处理困境的) automakers that are shifting away from SUVs and banking on fuel-efficient hybrids and electric cars to stay in business. As expected, the cars showcased at this year’s North American International Auto Show in Detroit were vehicles that run primarily on batteries, including the much-hyped Chevy Volt, the Jeep Patriot and the Dodge Circuit EV sports car.
Carmakers saw the show as an opportunity to advertise positive change. "People were expecting a funeral for 2009," says Jon J. Lauchner, Vice president of global program management for General
A. they are far from mainstream
B. they are caught in depression
C. gas-powered cars cost much less
D. they don’t care about the environment
[单选题]取环跳穴的最佳体位是
A..侧卧位,双膝屈曲
B..侧卧位,取穴侧屈髋屈膝
C..侧卧位,取穴侧屈膝伸髋
D..侧卧位,双膝双髋均屈曲
E..侧卧位,取穴侧伸膝伸髋
[单项选择]Talk to anyone in the drug industry,______ you'll soon discover that the science of genetics is the biggest firing to hit drug research since penicillin was discovered.
A. or
B. and
C. for
D. so
[简答题]
{{U}}On July 12, 1993, a young professor of American history named Frederick
Jackson Turner stood up to speak.{{/U}} The scene was the American History
Congress at the Chicago World’s Fair. (62) {{U}}His paper was titled "The
significance of the Frontier in American History."{{/U}} Turner had a new idea.
(63) {{U}}And many historians who heard him recognized that he had come upon a
simple theory that seemed right.{{/U}}
To Turner, the frontier was
one of the most powerful forces shaping the American character. He pointed out
that the frontier was a place for new beginnings, a place where men and women
could build new lives. Thus, the frontier represented hope and opportunity to
Americans. Turner also pointed out that these new lives on the frontier were
shaped by tile hardships of surviving in the wilderness. Thus, life on the
frontier produced determination in Americans and made them believe in the value
of work. (64){{U}}According to Turner’s
[单选题]The new apartment had many drawbacks,most notably its price.
A.noticeably
B.remarkably
C.particularly
D.significantly
[填空题]阅读下列函数说明和C代码，将应填入 (n) 处的字句写上。
[说明]
若要在N个城市之间建立通信网络，只需要N-1条线路即可。如何以最低的经济代价建设这个网络，是一个网的最小生成树的问题。现要在8个城市间建立通信网络，其问拓扑结构如图5-1所示，边表示城市间通信线路，边上标示的是建立该线路的代价。
[图5-1]
[*]
无向图用邻接矩阵存储，元素的值为对应的权值。考虑到邻接矩阵是对称的且对角线上元素均为0，故压缩存储，只存储上三角元素(不包括对角线)。
现用Prim算法生成网络的最小生成树。由网络G=(V，E)构造最小生成树T=(U，TE)的Prim算法的基本思想是：首先从集合V中任取一顶点放入集合U中，然后把所有一个顶点在集合U里、另一个顶点在集合V-U里的边中，找出权值最小的边(u，v)，将边加入TE，并将顶点v加入集合U，重复上述操作直到U=V为止。
函数中使用的预定义符号如下：
#define MAX 32768 /*无穷大权，表示顶点间不连通*/
#define MAXVEX 30 /*图中顶点数目的最大值*/
typedef struct
int startVex，stopVex; /*边的起点和终点*/
float weight; /*边的权*/
Edge;
typedef struct
char vexs[MAXVEX]; /*顶点信息*/
float arcs[MAXVEX*(MAXVEX-1)/2]; /*邻接矩阵信息，压缩存储*/
int n; /*图的顶点个数*/
Graph;
[函数]
void PrimMST(Graph*pGraph, Edge mst[])
int i,j,k,min,vx,vy;
float weight，minWeight;
Edge edge;
for(i=0; i＜pGraph-＞n-1；i++)
mst[i].S
[单项选择]上列哪一种消毒剂只适用于单位供水（）
A. 氯
B. 臭氧
C. 紫外线
D. 二氧化氯
E. 氯胺
[单选题]肺炎链球菌肺炎病人其痰液呈：
A.黏液痰
B.铁锈色痰
C.大量脓痰分3层
D.恶臭痰
E.大量粉红色泡沫痰
[单项选择]采用乳化沥青稀浆封层施工上、下封层时，稀浆封层的厚度宜为( )。
A. 2～4mm
B. 3～6mm
C. 2～5mm
D. 4～5mm
[多选题]抢救一开始，应即向伤员先吹气两口，吹气时胸廓隆起者，人工呼吸有效；吹气无起伏者，则气道通畅不够，或鼻孔处漏气、或吹气不足、或气道有梗阻，应及时纠正。需要注意的是（）
A.A.每次吹气量不要过大，约600mL（6～7mL/kg），大于1200mL会造成胃扩张；
B.B.吹气时不要按压胸部；
C.C.儿童伤员需视年龄不同而异，其吹气量约为500mL，以胸廓能上抬时为宜；
D.D.抢救一开始的首次吹气两次，每次时间1～1.5s；
[填空题]如果线路上有人工作，停电作业时应在线路开关盒刀闸操作手柄上悬挂()，线路有人工作的标识牌。
[单项选择]
In 1924 American’ National Research Council sent to engineers to supervise a series of industrial experiments at a large telephone-parts factory called the Hawthorne Plant near Chicago. It hoped they would learn how stop-floor lignting__1__workers productivity. Instead, the studies ended __2___giving their name to the “Hawthorne effect”, the extremely influential idea that the very___3____to being experimented upon changed subjects’ behavior. The idea arose because of the __4____behavior of the women in the Hawthorne plant. According to __5____of the experiments, their hourly output rose when lighting was increased, but also when it was dimmed. It did not __6____what was done in the experiment; ___7_someting was changed ,productivity rose. A(n)___8___that they were being experimented upon seemed to be ____9___to alter workers’ behavior ____10____itself. After several decades, the same data were _11__ to econometric the analysis. Hawthorne experim
A. about
B. for
C. on
D. by
[判断题]建设单位不得将工程发包给自然人。
A.正确
B.错误
[单选题]单管塔每节垂直度偏差不大于（ ）
A.h/700
B.h/750
C.h/800
D.h/850
[判断题]发动机大修主要取决于气缸的磨损程度。
A.正确
B.错误
[单选题]计量单位是用以( )而约定采用的特定量,它具有明确名称、符号和定义,其数值为1
A.非定量表示同种量量值
B.定量表示同种量量值
C.定量表示非同种量量值
D.非定量表示非同种量量值
[判断题]校正砌块时，可在灰缝中塞石子或砖片。 ( )
A.正确
B.错误
[单项选择]描述一组数值变量资料的分布特征时应（）。
A. 同时选用算术均数和标准差
B. 同时选用中位数和四分位数间距
C. 同时选用几何均数和四分位数间距
D. 根据分布类型选用相应的集中趋势和离散趋势指标
E. 只选集中趋势和离散趋势指标中的一个即可
[多选题]
(1分) 蒸汽管串油的处理方法有( )
A.立即通知班长和与该蒸汽线有关岗位
B.立即查清串油原因，并关闭串油阀门
C.对怀疑关不严或内漏的阀门要更换或加上盲板
D.立即将蒸汽线串的油向临近同品种油品油罐内扫净
[多项选择]股票投资的收益由（）组成。
A. 股息收入
B. 资本利得
C. 利息
D. 公积金转增股本
[单项选择]下列哪一项属于流动资产（）。
A. 抵押贷款
B. 应付账款
C. 短期借款
D. 应收账款
[单选题]新装和增容用电均应向供电企业办理用电申请手续，填写( )。
A.A、业务工作单
B.B、用电报告
C.C、用电申请书
D.D、登记卡
[单选题] 我国交流电的额定频率为( )hz。
A.40
B.50
C.80
[单项选择]磺胺类药物与甲氧苄啶合用（）
A. 增强疗效
B. 延缓耐药性的发生
C. 降低毒性作用
D. 提高机体的耐受性
E. 治疗多种疾病
