热门试题:
[单项选择]特阀工作突然失灵的原因是跟踪丢失时,正确的处理方法是()。
A. 改就地液动控制
B. 调节控制信号消除偏差
C. 改就地机械控制
D. 改就地控制盒控制
[判断题]对于一个具体的标准孔板,在不同的雷诺数值下的流量系数α值也是不同。( )
A.正确
B.错误
[单项选择]To call something "marginal" means it is not very good. Farmers have their own way to (47) marginal land: It is the last to be planted under good conditions, and has the (48) to be avoided under poor conditions. Low (49) soil is not the only reason land could be considered marginal. It might be in an area where rainfall is (50) or where a hillside might rise too steeply (陡峭地).
There are uses for marginal land, however. Most often it is used as grassland. Grasses provide excellent (51) for grazing (吃草) animals like cattle, sheep and goats. Grass seed can be bought from a foreign supplier or (52) grasses can be used. However, using marginal land for grazing is not a simple issue. There is a (53) of overgrazing. Cattle can damage the crops by eating down to the roots. Also, the weight of the animals crushes the soil and can make it too hard for growing. A(n) (54) way to reduce the harm is to move animals from one field to another. This method is known as rotational g
[判断题]一切安全稳定工作的重点是避免大的事故停电,避免扰动的影响扩散,避免连锁事故的发生,保证电力系统的正常运行。
A.正确
B.错误
[多选题]带架水枪( ),适合扑救大面积火灾。
A.可喷射泡沫
B.直流.喷雾两用
C.水流量大
D.发泡倍数高
E.射程远
[单项选择]碘伏属于( )
A. 高效
B. 中效
C. 中低效
D. 低效
E. 以上都不是
[单项选择]后颅凹CT扫描的基线取()。
A. 听眦线
B. 听眶线
C. 听眼线10°
D. 听眶线20°
E. 听眉线25°
[单项选择]最容易引起急性肾功能衰竭的外伤是()
A. 关节扭伤
B. 严重挤压伤
C. 创伤性窒息
D. 严重头皮裂伤
E. 严重头皮撕脱伤
[多选题]托运人托运集装箱货物时,对其在运单、物品清单内填记内容的真实性负完全责任,应准确填记( )等各项内容。
A.货物名称
B.集装箱号码
C.施封号码
D.重量
[多项选择]蓝天股份公司(上市公司)的董事长甲,公司上市半年后,因单位房改急需款项,遂将其个人所有的蓝天股份公司股票质押给乙,借款10万元。有关该事例中质押合同效力的下列表述中,哪一个是正确的?()
A. 质押合同自始无效
B. 质押合同自甲与己办理质押合同登记之日生效
C. 质押合同自甲取得己的借款之日生效
D. 质押合同因甲的股票不能设定质押而无效
[单选题]对于应答人未在规定时间内提交,或者书面明确不参与后续或最终报价的,以其()提交的有效报价为准。
A.最后一轮$
B.$首轮$
C.$第二轮$
D.$第三轮
[单选题] 双线反方向出站调车时,应发给司机( )。
A.绿色许可证
B.路票
C.出站调车通知书
[单选题]决定爆发力的因素( )
A.肌力量与收缩速度
B.肌张力
C.运动速度
D.运动持续时间
E.以上都不对
[单项选择]以下不得申请转关运输的货物是:
A. 动物废料
B. 木制品
C. 化学品
D. 贱金属及其制成品
[单选题] 在《南方电网公司基建项目指导工期表》中,110kV变电站建设规模一般指:主变最终规模3台,本期2台;110kV出线最终3-4回,本期2回;10kV出线最终30回,本期( )回;当主变最终规模2台,本期1台时,则施工及总控制工期调整系数为0.9。
A.8
B.12
C.20
D.24
[判断题] 发电厂一次主接线通常包括发电机母线侧的接线和升压站变电所接线。()[1.0分]
A.正确
B.错误
[单项选择]便利店订货前准备,主要是销量分析、库存检查、促销准备、订货量计算和()。
A. 要货申请
B. 销售预测
C. 清洁货架
D. 指定专人
[单选题]1.263.
使用数字式兆欧表测量绝缘时,不正确的是( )。
A.两人进行
B.测量线端部应有绝缘套
C.测量前可不对地放电,但测量后必须放电
D.验明被试设备无电压放电
[填空题] 中心标准分为一级四类;一级指( ),四类指( )、( )、( )和( )。
[单项选择]短发盘发的饰物的点缀要()
A. 多
B. 少
C. 恰到好处
D. 夸张
[单项选择]Question 41-44
Saudi Arabia, OPEC’s cautious giant, understands all this. When Bill Clinton met Saudi Arabia’s Crown Prince Abdullah this week, Mr. Clinton argued for an output rise big enough to put an end to these painful prices. Prince Abdullah has promised to “make every effort to ensure equilibrium in the oil markets and to stabilise prices.” This week he revealed that Saudi Arabia has been quietly leaking an extra 600,000 barrels per day (bpd) on to the market since July in an effort to cool prices.
.If that is true, it just goes to show that managing the oil markets is easier said than done. Despite several Saudi-inspired output increases by the cartel in recent months, the price has remained stubbornly high; this week, it soared to nearly $35 a barrel, the highest since theGulf war in 1990. As the cartel’s oil ministers gather in Vienna on September 10th to hammer out new production quotas, they are once again under intense pressure to release more oil, and fast.
T
A. Saudi Arabia is the largest country among the members of OPEC.
B. Saudi Arabia is the most active country in OPEC to control oil prices for the benefit of the rest of the world.
C. Saudi Arabia is the guardian of the world oil market.
D. Saudi Arabia seems to have strong intention to control the oil prices to a acceptable level, but it takes actions very carefully for the consideration of its own benefit.
[多选题]厂焊又称为( )。
A.氩弧焊
B.电阻焊
C.接触焊
D.闪光焊
E.气压焊
[判断题]用百分表测量时,测量杆应能平稳,灵活地移动,无卡涩现象。 ( )
A.正确
B.错误
[判断题]《南昌局集团公司旅客声明丢失实名制车票挂失补办流程》(南铁客[2021]42号)规定,旅客在出站检票前丢失实名制纸质车票的,须主动向车站声明,并配合车站工作人员进行查验。
A.正确
B.错误
[单选题]安全线是( )中的防伪技术。
A. 油墨;
B. 纸张;
C.印刷;
D.制版。
[单项选择]下列解热镇痛药不良反应最大的是()
A. 乙酰水杨酸
B. 对乙酰氨基酚
C. 吲哚美辛
D. 阿司匹林
E. 萘普生
[判断题]56. 公民、法人或者其他组织对行政机关的行政行为不服,依照行政复议法和行政复议法实施条例的规定申请行政复议的,作出该具体行政行为的行政机关为被申请人。()
A.正确
B.错误
[判断题]交流电机直接起动是一种简单、可靠、经济的起动方式,也适合于较大容量(大于lOkW)的电动机。
[单选题]肥胖指体重超过标准体重的
A.5%
B.10%
C.20%
D.30%
E.40%
[单选题]病人,女,46岁,风湿性心脏瓣膜病史20年,今晨突然发现右侧肢体行动不便,伴口角歪斜,应考虑()
A. 脑出血
B. 脑栓塞
C. 脑血栓
D. 脑肿瘤
E. 脑水肿
[单选题]企业只经营一种类型的产品,满足某一类顾客的特点需求,是目标市场选择的( )模式
A.选择专业化模式
B.市场集中化模式
C.产品专业化模式
D.市场专业化模式
[单项选择]青少年牙周炎主要致病菌为()
A. 核梭形杆菌
B. 伴放线放线杆菌
C. 牙龈卟啉菌
D. 螺旋体
E. 产黑色素类杆菌
[单选题]遇站区发生中断铁路行车水害,待( )防洪应急领导小组达到现场后,车站站长(副站长)应向( )防洪应急领导小组负责人通报前期险情处置情况
A.防洪办、委托维修单位
B.工务段(委托维修单位)、工务段(委托维修单位)
C.工务部门、工务部门
[多选题]利润率表示全部资本的增值额度,提高利润率的途径有:
A.提高剩余价值率
B.提高资本有机构成
C.加快资本周转速度
D.节省不变资本
[单选题]地面发动机不工作时,能使用哪些液压系统?
A.A.只有黄,绿系统
B.B.黄,蓝系统
C.C.黄,绿,红系统
D.D.黄,绿,蓝系统
[简答题]说明垂直载荷在转K5型转向架中的传递顺序。
[单项选择]
Text
Today, most countries in the world have canals. Many countries have built canals near the coast, and parallel (26) the coast. Even in the twentieth century, goods can be moved more cheaply by boat than by any other (27) of transport. These (28) make it possible for boats to travel (29) ports along the coast without being (30) to the dangers of the open. Some canals, such as the Suez and the Panama, save ships weeks of time by making their (31) a thousand miles shorter. Other canals permit boats to reach cities that are not (32) on the coast, still other canals (33) lands where there is too much water, help to (34) fields where there is not enough water, and (35) water power for factories and mills. The size of a canal (36) on the kind of boats going through it. The canal must be wide enough to permit two of the largest boats using it to (37) each other e
A. way
B. means
C. method
D. approach
[单选题]电缆穿越楼板、墙壁或盘柜孔洞以及管道两端时,应用防火堵料封堵防火封堵材料应密实无气孔,封堵材料厚度不应小于( )。
A.100mm
B.200mm
C.50mm
D.10mm
[单选题]坚持“管理、( )、培训并重”是我国煤矿安全生产工作的基本原则。
A.装备
B.技术
C.检查