热门试题:
[单选题]在复线地回流约占牵引负荷电流的( )%。(1分)
A.25
B.35
C.60
D.75
[单选题]根据飞行状态(大加速度、俯仰姿态低)不同，高速保护在等于/大于VMO/MMO时被起动。高速保护工作时自动驾驶：
A.脱开
B.衔接
[单项选择]以下哪种是HBV感染后产生的保护性抗体（）。
A. 抗-HBs
B. 抗HBclgM
C. 抗HBcIgG
D. 抗HBe
E. HBeAg
[单选题]金融是国家重要的( )，金融制度是经济社会发展中重要的基础性制度，金融治理是重要而特殊的经济治理。
A.核心竞争力
B.核心创新力
C.生产力
D.建设力
[单项选择]可加速丁香油氧化锌水门汀结固的因素是
A. 液中加橄榄油
B. 调拌中与水接触
C. 粉中加磷酸锌
D. 粉中减少硬脂酸锌
E. 粉中减少醋酸锌
[单选题]世界上大多数城市的轨道交通运营时间在（ ）小时之间。
A.A.10～12
B.B.18～20
C.C.20～22
D.D.22～24
[判断题]振幅就在一秒钟内往复的次数( )
A.正确
B.错误
[单项选择]某省围棋队教练从E、F、G、H、J、K和M这7名队员中挑选C名参加职业联赛，挑选必须符合下列条件：以下哪项列出的队员一定会参加比赛A．F或M，或者二者兼具。
A. E、F、H、K
B. E、G、J、M
C. E、H、J、M
D. F、H、K、M
[判断题]带电接引线时未接通相的导线及带电断引线时已断开相的导线将因感应而带电。为防止电击，应在许可后才能触及。
A.正确
B.错误
[多选题]装拆接地线，以下做法正确的是（ ）。
A.装设接地线应先接接地端，后接导体端，接地线应接触良好，连接应可靠
B.装设接地线应先接导体端，后接接地端，接地线应接触良好，连接应可靠
C.装、拆接地线导体端均应使用绝缘棒和戴绝缘手套
D.人体不得碰触接地线或未接地的导线，以防止触电
[单项选择]在普通的微处理芯片中，主要具有CISC和RISC两种不同的体系结构。80386的体系结构为______。
A. CISC结构
B. 融合了CISC结构和RISC结构
C. RISC结构
D. 不具有上述两种结构
[多项选择]光功率计使用应具备条件（）
A. 有发光的光源
B. 测试光纤
C. 光功率计要有电
[多选题]所有（）的二次绕组应有一点且仅有一点永久性的、可靠的保护接地。
A.电流互感器
B.电压互感器
C.电容器
D.电抗器
[单选题]安全临界浓度为硫化氢检测的（）报警值
A.一级
B.二级
C.三级
D.四级
[单项选择]
Entertainment in London
Buying Books Londoners are great readers. They buy vast numbers of newspapers and magazines and even of books especially paperbacks, which are still comparatively cheap in spite of ever-increasing rises in the costs of printing. They still continue to buy "proper" books, too, printed on good paper and bound between hard covers.
There are many streets in London containing shops which specialize in book-selling. Perhaps the best known of these is Chafing Cross Road in the very .heart of London. Here bookshops of all sorts and sizes are to be found, from the celebrated one which boasts of being "the biggest bookshop in the world" to the tiny, dusty little places which seem to have been left over from Dickens’ time. Many of them specialize in second-hand books, in art books, in foreign books, in books of philosophy, politics or any other of the various subjects about which books may be writte
[单项选择]关于同位素在肿瘤诊断中的应用，下列哪项是正确的
A. 扫描诊断分辨率高，能显示直径小于2cm的病变
B. 对胃肠道诊断阳性率较高
C. 肝扫描诊断肝癌是特异性方法
D. 肝扫描可以发现早期肝癌
E. 以上都不对
[单选题](1.0分)厚涂型防火涂料涂层的厚度,()及以上面积应符合有关耐火极限的设计要求,且最薄处厚度不应低于设计要求的()。
A.75%,80%
B.80%,85%
C.85%,90%
D.90%,90%
[单项选择]Which of the following is NOT true
[单选题]血液中非结合胆红素明显升高见于( )
A.溶血性贫血
B.急性肝炎
C.胆总管结石
D.胰头癌
E.胆囊结石
[判断题]在突出灾区应设立安全岗哨，非救护队人员进入灾区必须配用氧气呼吸器，不得单独行动。
A.正确
B.错误
[判断题]客户连续三个月不用电，也不申请办理暂停用电手续者，供电企业须以销户终止其用电。
A.正确
B.错误
[单项选择]
Three Ways to Become More Creative
Most people believe they don’t have much imagination. They are wrong. Everyone has imagination, but most of us, once we become adults, forget how to access it. Creativity isn’t always connected with great works of art or ideas. People at work and in their free time routinely think of creative ways to solve problems. Maybe you have a goal to achieve, a tricky question to answer or you just want to expand your mind! Here are three techniques to help you.
This technique involves taking unrelated ideas and trying to find links between them. First, think about the problem you have to solve or the job you need to do. Then find an image, word, idea or object ,for example, a candle. Write down all the ideas/words associated with candles: light, fire, matches, wax, night, silence, etc. Think of as many as you can. The next stage is to relate the ideas to the job you have to do. So imagine you want to buy a f
A. you could find an image and try to link it with the problem.
B. you should link it with candles.
C. you have to think of buying a present for a friend.
D. you should link it with as many words as possibl
[单选题]探测面与工件底面不平行时（ ）。
A.导致荧光屏图象中失去底面回波
B.难以对平行于入射面的缺陷进行定位
C.通常表示在金属中存在疏松状态
D.减小试验的穿透力
[单选题]( )由钢轨、联结零件、轨枕、道床、道岔和防爬设备组成。
A.路基
B.道岔
C.桥梁、隧道、涵洞及明渠
D.轨道
[单项选择]患儿5岁，诊断为龋活性显著，医生建议该儿童采用一种能抑制葡糖基转移酶活性、减少葡聚糖合成的天然植物药类是（）
A. 甘草
B. 五倍子
C. 红花
D. 血根草
E. 茶多酚
[判断题]超声波的主要物理量有波长.频率和声速。
A.正确
B.错误
[单选题]直流电动机在( )情况下运行时,过载倍数应有所减小。
A.
换向恶化
B.
减速
C.
轻载
D.
满载
[单选题] 制动时左右车轮制动力不相等会使汽车：( )
A.跑偏
B.制动距离过长
C.路面附着力左右不一致
D. 制动时车轮抱死
[多选题]关于站内电码化错误的说法是( )
A.只对列车发码
B.只对调车发码
C.对列车和调车均能发码
D.对列车和调车均不发码
[多选题]3.17根据DL/T 583-2018《大中型水轮发电机静止整流励磁系统及装置技术条件》, 励磁系统在现地必须能显示的信息有( )。
A.励磁电流机端电压;
B.励磁电压;
C.有功功率无功功率;
D.每个整流桥的直流电流。
出处:DL/T 583-2018《大中型水轮发电机静止整流励磁系统及装置技术条件》5.2.14
[单项选择]大型基坑初期排水的排水时间可采用( )。
A. 1～3d
B. 3～5d
C. 5～7d
D. 7～9d
[判断题]单位结算账户资金不得转入个人结算账户作过渡。
[单选题]假定单元格D3中保存的公式为=B3+C3，若把它复制到E4中，则E4中保存的公式为（）。
A.=B3+C3
B.=C3+D3
C.=B4+C4
D.=C4+D4
[单项选择]久站久行或劳累时瘤体增大，下坠不适感加重，瘤体皮色淡暗或变化不大，皮温不高，伴气短乏力，脘腹胀坠，腰酸，舌体胖，舌淡苔薄白，脉细缓无力。此筋瘤属（）
A. 肝郁痰凝证
B. 火旺血燥证
C. 劳倦伤气证
D. 脾虚湿困证
E. 寒湿凝筋证
[单选题]企业要加强( ),适时修订完善应急预案,组织专家进行评审或论证,按照有关规定将应急预案报当地政府和有关部门备案,并与当地政府和有关部门应急预案相互衔接。
A.应急预案演练
B.应急预案管理
C.应急预案宣贯
