热门试题:
[单项选择]防止钢筋混凝土受弯构件受剪中的斜拉破坏的措施是()。
A. 增加纵向受拉钢筋
B. 增加纵向受压钢筋
C. 加大截面高度
D. 保证箍筋配筋率
[判断题]甲、乙类仓库内可设置办公室、休息室等。
A.正确
B.错误
[单选题]各类作业人员有权拒绝违章指挥和强令冒险作业。()
A.A.正确
B.B.错误
[判断题]检查泡沫灭火器时,先拆卸筒盖,检查滤网安装是否牢固,滤网是否堵塞,检查筒盖密封橡胶垫圈是否损坏,装配中有无错位。( )
A.正确
B.错误
[单项选择]绞窄性腹股沟斜疝,在行肠切除、吻合术后应做
A. 单纯疝囊高位结扎术,而不做疝修补术
B. 佛格逊氏法疝修补术
C. 巴西尼氏法疝修补术
D. 麦克凡氏法疝修补术
E. 以上都不对
[单选题]在接触网终点的线路上调车时,电力机车应控制速度,机车距接触网终点标应有()的安全距离。
A.50m
B.40m
C.30m
D.10m
[单选题]按蚊传播疟疾的方式属于
A.繁殖并经卵传递式
B.发育式
C.繁殖式
D.机械式
E.发育繁殖式
[单项选择]氧解离曲线是表示下列哪种关系的曲线
A. Hb含量与氧解离量
B. Hb氧饱和度与血氧分压
C. Hb氧饱和度与Hb氧含量
D. Hb浓度与Hb氧容量
[单项选择]所谓的“设计试管婴儿”比一般所说的试管婴儿要多一个步骤,即()
A. 体外受精
B. 胚胎移植
C. 基因检测
D. 细胞核移植
[单项选择]药物制剂的物理的配伍变化有
A. 折出沉淀或分层
B. 折出沉淀或分层、潮解、液化、结块
C. 析出沉淀或分层、潮解、液化、结块、分散状态或粒径变化
D. 折出沉淀或分层、分散状态或粒径变化
E. 分散状态、粒径变化、潮解
[单项选择]非特殊需要,不应在跨越处下方或邻近有电力线路或其它弱电线路的档内进行带电( )的工作。
A. 架、拆线
B. 清扫
C. 检测绝缘子
[单选题]一台50Hz三相感应电动机的转速为n=720r/min,该电机的极数和同步转速为(____)。
A.4极,1500r/min
B.6极,1000r/min
C.8极,750r/min
D.10极,600r/min
[判断题]根据GB1589-2016,所有在道路上使用的汽车、挂车及汽车列车的高度最大限值均不得超过4米。
A.正确
B.错误
[判断题]挂有客车的货物列车(车列)需进行解、编、摘挂作业时,如所编挂的客车处于制动状态,采取扳动客车缓解阀进行缓解。
A.正确
B.错误
[单选题]下列关于贷款金额的说法正确的是()。
A.A:贷款金额应依据借款人合理资金需求量和承贷能力来确定
B.B:固定资金贷款需求计算可参考《流动资金贷款管理暂行办法》
C.C:流动资产贷款需求可根据项目总投资、资本金比例等加以计算
D.D:贷款金额应尽量满足借款人的一切需求
[多选题]下列说法中错误的是( )。
A.同频率正弦量之间的相位差与频率密切相关
B.若电压与电流取关联参考方向,则感性负载的电压相量滞后其电流相量90°
C.容性负载的电抗为正值
D.若某负载的电压相量与其电流相量正交,则该负载可以等效为纯电感或纯电容
[多选题]如何处理喷射混凝土支护时围岩渗水问题()。
A.根据水量大小可采取压气清扫
B.快凝水泥砂浆封堵
C.导水
D.不用采取措施
[多项选择]在线检测室中上传到环保局的数据有()。
A. COD值
B. 氨氮值
C. PH值
D. 总流量
[单项选择]设关系模式R,其中U=H,I,J,K,L,若F=H→IJ,J→K,IJK→L,L→H,L→K),则F的最小函数依赖集Fmin= (58) 。关系模式R的候选关键字有 (59) 个,R属于 (60) 。
A. 1
B. 2
C. 3
D. 4
[单选题]在事故现场应急处置安排中,依据疏散的时间要求、距离远近可将人员疏散分为临时疏散和远距离疏散,进行远距离疏散前,需结合相关因素制定科学的疏散规划。下列因素中,在制定远距离疏散规划时一般不需要考虑的是( )。
A.人员层次的结构
B.可用的疏散时间
C.可提供的疏散能力
D.危险区域人员的分布
[单选题]在共发射极放大电路中,输出电压与输入电压相比较
。
A.相位相同,幅度增大
B.相位相同,幅度减小
C.相位相反,幅度增大
D.相位相反,幅度减小
[多选题]机械加速澄清池投加药剂有()。
A.PAM
B.石灰乳
C.聚合硫酸铁
D.硫酸
[单选题]不属于燃烧的三要素的是()。( )
A.可燃性物质
B.点火源
C.阻燃性物质
[单选题]男性,40岁,既往有心脏病史5年,近来感体力不支,不能从事任何体力活动,休息时亦感乏力、心悸、气急,判断其心功能属于( )
A.心功能I级
B.心功能II级
C.心功能I级
D.心功能IV级
E.以上都不对
[单选题]手动报警按钮、消防电话插孔,所有走廊与公共区都有分布,不超过()米一个。
A.30
B.50
C.25
D.100
[单项选择]The mountain-climbers took every ______ to minimize the dangers of their trip.
A. caution
B. means
C. warning
D. precaution
[单项选择]
You have been badly injured in a car accident. It is necessary to give you a blood transfusion(输血) because you lost a great deal of blood in the accident. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you.
There are four basic types of blood: A, B, AB and O. A simple test can indicate a person’ s blood type. Everybody is born with one of these four types of blood. Blood type, like hair color and height, is inherited from parents.
Because of substances contained in each type, the four groups must be transfused carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can give to any other group; hence, it is often called the universal donor (通用献血者). For the opposite reason, AB is sometimes called universal recipient. However, because so many reactions can occur in transfusions, patients usually receive only salt or plasma
A. it may save you
B. it has no effect
C. it could kill you
D. it is very safe
[单选题]患者李某,患真菌性口腔炎,宜选的漱口液是
A.1%~3%过氧化氢溶液
B.2%~3%硼酸溶液
C.1%~4%碳酸氢钠溶液
D.0.02%呋喃西林溶液
[不定项选择题]共用题干
患者男性,42岁。入院时呼之不应,双眼瞪视不动,伴擦鼻、咀嚼,醒后可继续原来的动作、对发作全无记忆,并在清晨觉醒或刚入睡时常呈短暂、快速的某一肌肉或肌群收缩。
此时最应给予患者的药物为
A.苯妥英钠
B.地西泮
C.丙戊酸钠
D.乙琥胺
E.卡马西平
[单项选择]地下防水工程验收规范(GB50208-2011):在注浆工程中,注浆对地面产生的沉降量不得超过(),地面隆起不得超过()。
A. 20mm、30mm
B. 20mm、20mm
C. 30mm、30mm
D. 30mm、20mm
[单选题]参战退役军人享受相关待遇的时间是从什么时候开始?( )
A. 递交申请之日起开始
B. 审核批准日的当月起开始
C. 审核批准日的下个月起开始
D. 审核批准日的次年1月起开始
[单项选择]恒速恒量给药后形成的血药浓度为()
A. 有效血浓度
B. 稳态血浓度
C. 峰浓度
D. 阈浓度
E. 中毒浓度
[不定项选择题]共用题干
How Technology Pushes Down Prices
1 Prices have fallen in the food business because of advances in food production and distribution tech-
nology.Consumers have benefited greatly from those advances.People who predicted that the world would
run out of food were wrong.We are producing more and more food with less and less capital.Food is there-
fore more plentiful and cheaper than it has ever been.Spending on food compared with other goods has fallen
for many years,and continues to drop.
2 Supermarkets have helped push down prices mainly because of their scale.Like any big business,
they can invest in IT systems that make them efficient.And their size allows them to buy in bulk.As super-
markets get bigger,the prices get lower.
3 Huge retail companies such as Wal-Mart have tremendous power and they can put pressure on pro-
ducers to cut their margins.As a result,some producers have had to make cuts.In recent years,Unilever
has cut its workforce by 33,000 to 245,000 and dropped lots of its minor brands as part of its"path to
growth"strategy.Cadbury has shut nearly 20 per cent of its 133 factories and cut 10 per cent of its 55,000
global workforce.These cuts help keep costs down,and the price of food stays low.
4 Does cheap food make people unhealthy?Cheap food may encourage people to eat more.Food com-
panies certainly think that giving people more food for their money makes them buy more.Giving people big-
ger portions is an easy way of making them feel they have got a better deal.That is why portions have got
larger and larger. In America,soft drinks came in 80z(225g)cans in the past,then 120z(350g),and
now come in 200z(550g)cans.If a company can sell you an 80z portion for$7,they can sell you a 120z
portion for$8.The only extra cost to the company is the food,which probably costs 25 cents.
5 Now companies are under pressure to stop selling bigger portions for less money.But it is hard to
change the trend.
Paragraph 1__________
A.Huge Retailers Force Producers to Cut Costsl
B.Consumers Like Supermarkets
C.Technology Helps Reduce Food Prices
D.Food Comes Cheaper in Larger Portions
E.Chain Stores Provide Better Service
F.Bigger Supermarkets Offer Lower Prices
[判断题]当井斜角增大时,仪器靠自身的重力到达井底愈加容易。( )
A.正确
B.错误
[单项选择]在评吸过程中,当烟气移动到喉部前沿时判断有无()。
A. 烟气细腻程度
B. 烟气柔和、细腻程度
C. .烟气劲头大小
D. 刺激性
[单选题]梯子上只准有()人作业。
A.1
B.2
C.3
D.4
[判断题]上级纪检监察机关有权指定下级纪检监察机关对其他下级纪检监察机关管辖的党组织和党员.干部以及监察对象涉嫌违纪或者职务违法.职务犯罪问题进行审查调查,必要时也可以直接进行审查调查。
A.正确
B.错误
[多项选择]无差异曲线的特征是()。
A. 无差异曲线向右上方倾斜
B. 无差异曲线向左上方倾斜
C. 无差异曲线随着风险水平的增加越来越陡
D. 无差异曲线随着风险水平的增加越来越平缓
E. 无差异曲线之间互不相交