热门试题:
[单项选择]液化石油气的气态比重和空气的比重相比,则()。
A. 空气的比重大
B. 液化气石油气态比重大
C. 一样大
D. 难以判断
[判断题]压力对液体的粘度影响可忽略不计。
A.正确
B.错误
[判断题]沉淀池只起让矶花下沉作用,所以建在反应池后面。
[多选题]关于对受限空间进行安全隔绝,以下说法正确的是( )。
A.A.与受限空间连通的可能危及安全作业的管道应采用插入盲板或拆除一段管道进行隔绝
B.B.与受限空间连通的可能危及安全作业的孔、洞应进行严密地封堵
C.C.受限空间内的用电设备应停止运行并有效切断电源,在电源开关处上锁并加挂警示牌
D.D.与受限空间连通的可能危及安全作业的管道应如果阀门无泄漏,可以通过关闭阀门的方式隔绝
[判断题]在运营期间,发生乘客违规解锁车门事件,应急响应分级分为一级、二级。一级为列车触发紧急制动,被迫停在区间;二级为列车未触发紧急制动, 可以维持进站, 当速度≤5km/h时, 触发紧急制动。
A.正确
B.错误
[多选题]集合是使( )按照规范队形聚集起来的一种队列动作。
A.单个人员
B.建制单位
C.中队人员
D.支队人员
[单选题]当验明检修的低压配电线路、设备确已无电压后可装设遮栏防止反送电。
A.正确
B.错误
[单项选择]企业筹资管理的核心内容是( )
A. 合理安排长期资金和短期资金的比例
B. 合理安排直接筹资和间接筹资的比例
C. 合理安排货币资金和结算资金的比例
D. 合理安排主权资本和负债资金的比例
[判断题]( )其他站线混凝土枕地段,水平在临时补修容许偏差管理值为18mm。
A.正确
B.错误
[填空题] 当负载发生变化时,( )电机的转速将在很大范围内变化。
[单项选择]房地产开发商可以通过对项目的可控因素的控制实现自己的经济目标,这些可控因素包括( )。
A. 产品、价格、渠道、促销
B. 权力、市场细分、定位、优先
C. 价格、成本、竞争、目标
D. 公共关系、权力、优势、企业形象
[单选题]( )368. 下列不属于挖掘机技术要求中“四禁止”的是()。
A.禁止铲斗未离开工作面时,进行回转
B.禁止进行急剧转动
C.禁止用铲斗的侧面刮平土堆
D.禁止停机时,铲斗悬空
[单选题]Text 2 Over the past decade,thousands of patents have been granted for what are called business methods.Amazon.com received one for its"one-click"online payment system.Merrill Lynch got legal protection for an asset allocation strategy.One inventor patented a technique for lifting a box.Now the nation's top patent court appears completely ready to scale back on business-method patents,which have been controversial ever since they were first authorized 10 years ago.In a move that has intellectual-property lawyers abuzz the U.S.court of Appeals for the federal circuit said it would use a particular case to conduct a broad review of business-method patents.In re Bilski,as the case is known,is"a very big deal",says Dennis
D.Crouch of the University of Missouri School of law.It"has the potential to eliminate an entire class of patents."Curbs on business-method claims would be a dramatic about-face,because it was the federal circuit itself that introduced such patents with its 1998 decision in the so-called state Street Bank case,approving a patent on a way of pooling mutual-fund assets.That ruling produced an explosion in business-method patent filings,initially by emerging internet companies trying to stake out exclusive rights to specific types of online transactions.Later,more established companies raced to add such patents to their files,if only as a defensive move against rivals that might beat them to the punch.In 2005,IBM noted in a court filing that it had been issued more than 300 business-method patents despite the fact that it questioned the legal basis for granting them.Similarly,some Wall Street investment films armed themselves with patents for financial products,even as they took positions in court cases opposing the practice.The Bilski case involves a claimed patent on a method for hedging risk in the energy market.The Federal circuit issued an unusual order stating that the case would be heard by all 12 of the court's judges,rather than a typical panel of three,and that one issue it wants to evaluate is whether it should"reconsider"its state street Bank ruling.The Federal Circuit's action comes in the wake of a series of recent decisions by the supreme Court that has narrowed the scope of protections for patent holders.Last April,for example the justices signaled that too many patents were being upheld for"inventions"that are obvious.The judges on the Federal circuit are"reacting to the anti-patent trend at the Supreme Court",says Harold
C.Wegner,a patent attorney and professor at George Washington University Law School.26.Business-method patents have recently aroused concern because of
A.their limited value to business
B.their connection with asset allocation
C.the possible restriction on their granting
D.the controversy over their authorization
[多选题]4.3.第3题
为减少用电设备对电网的谐波污染,常采用的技术措施有()。
A.加装交流滤波装置;
B.改变电容器组的串联电抗器;
C.装设平衡装置;
D.增加换流装置的相数或脉冲数。
[简答题]在不得已情况下,列车必须退行时,司机应如何行车?
[单项选择]内毒素的毒性成分主要是()。
A. 特异性多糖
B. 脂多糖
C. 核心多糖
D. 脂质A
E. 脂蛋白
[判断题]品牌宣传的质保期必须与工厂承诺的一致。( )
A.正确
B.错误
[单选题]病原微生物长期反复与药物接触后,对药物的敏感性降低,称为( )
A.反应性
B.遗传性
C.耐受性
D.耐药性
[单项选择]2岁以内可视为生理现象的病理反射是( )。
A. 戈登征
B. 克匿格征
C. 霍夫曼征
D. 巴宾斯基征
E. 布鲁辛斯基征
[单选题]防护栏杆必须自上而下用安全立网封闭,或在栏杆下边设置严密固定的高度不低于( )的挡脚板或40cm的挡脚笆。
A.14cm
B.16cm
C.18cm
D.20cm
[单项选择]罗斯杰是( )的代表人物之一。
A. 人本主义
B. 精神分析
C. 格式塔学派
D. 行为主义
[单选题][T1]新品试销,试销期一般设置时间为 ( )。
A.1 个月
B.1—3 个月
C.2—4 周
D.4—8 周
[多项选择]急性出血坏死型胰腺炎的病理变化有()
A. 少量的脂肪坏死
B. 并发胰腺脓肿
C. 假性囊肿
D. 组织出血坏死
E. 坏死灶周围有炎症细胞浸润包绕
[单选题]CRH380BL型动车组打开轮缘润滑油箱确认油箱内油位,当油位低于( )时进行补油。。
A.二分之一
B.三分之一
C.四分之一
D.五分之一
[单选题]一台1151压力变送器量程范围为0~300kPa,现零位正迁50%,则仪表的量程为( )。
A.150kPa
B.300kPa
C.450kPa
D.250kPa
[单选题]下图中测出的压力P为( )。
A.动压力
B.动压力+静压力
C.静压力
[单项选择]精密进近地形图中与中心剖面高相差()的那些物体及地形,应用()标绘在剖面图上。
A. ±3米,实线
B. ±1米,实线
C. ±3米,短划线
D. ±1米,短划线
[不定项选择题]上述哪项是九味羌活汤的功用
A.辛凉疏表,清肺平喘
B.解表散寒,温肺化饮
C.辛凉透表,清热解毒
D.发汗解肌,调和营卫
E.发汗祛湿,兼清里热
[判断题]井、坑、孔、洞或沟(槽),应覆以与地面齐平而坚固的盖板。检修作业,禁止临时打孔、洞。
A.正确
B.错误
[判断题]带电检测指设备在运行状态下,采用检测仪器对其状态量进行的现场检测。
A.正确
B.错误
[单项选择]一幅彩色照片经过扫描仪数字化处理后得到一个图像文件,当在显示器上显示该图像文件时,如果不考虑显示器的失真,则在色彩位数相同的情况下,该图像的清晰程度主要由扫描仪在扫描照片时所设定的()来决定。
A. 扫描分辨率
B. 与主机的接口
C. 扫描幅面
D. 扫描时间
[单选题]纯电感电路电流滞后电压( )。
A.30°
B.60°
C.90°
D.120°
[单项选择]食积内热者多见( )
A. 洪数脉
B. 滑数脉
C. 浮数脉
D. 濡数脉
E. 弦数脉
[多选题]《特种设备作业人员证》遗失或者损毁的,持证人应当:( )。
A.及时申请重新培训
B.及时报告发证部门补办
C.在当地媒体予以公告
D.持复印件.身份证进行换证
[判断题]在轧钢生产中,金属的轧制速度和金属的变形速度是截然不同的两个概念。
A.正确
B.错误