热门试题:
[单项选择]When enthusiasts talk of sustainable development, the eyes of most people glaze over. There is a whiff of sack-cloth and ashes about their arguments, which usually depend on people giving up the comforts of a modern economy to achieve some debatable greater good. Yet there is a serious point at issue. Modern industry pollutes, and it also seems to cause significant changes to the climate. What is needed is an industry that delivers the benefits without the costs. And the glimmerings of just such an industry can now be discerned.
That industry is based on biotechnology. At the moment, biotech’s main uses are in medicine and agriculture. But its biggest long-term impact may be industrial. Here, it will diminish demand for oil by taking the cheapest raw materials imaginable, carbon dioxide and water, and using them to make fuel and plastics.
Plastics and fuels made in this way would have several advantages. They could accurately be called "renewables", since nothing is depleted
A. the prospect of biotechnology industry depends on its marketing cost.
B. fuel cells are easier to be utilized in auto industry than biofuels.
C. biofuels will replace the fuel cells in the near future.
D. the price of bioplastics shows a downward trend.
[单选题]-A-A-006 5 2 5
当分子量大小相同时,含硫化合物反应活性的正确排序为( )。
A.硫醇﹥硫醚﹥二硫化物﹥噻吩类
B.硫醚﹥二硫化物﹥硫醇﹥噻吩类
C.硫醇﹥二硫化物﹥硫醚﹥噻吩类
D.噻吩类﹥二硫化物﹥硫醇﹥硫醚
[判断题]重联解编作业应在站场内进行，对于需在线路上进行作业时，须按规定进行安全防护
A.正确
B.错误
[单选题]手套/袜子型感觉减退见于____。
A.脑出血
B.癫痫
C.重症肌无力
D.帕金森病
E.急性脱髓鞘性多发性神经炎
[判断题]生产计算机由于其特殊性，可以不实施安全管控措施。
A.正确
B.错误
[判断题]操作标签和危险性标签贴在包装件外部用以提醒操作/搬运过程中之应注意事情。
A.正确
B.错误
[单选题] 旅客列车运行途中遇车辆空气弹簧故障时，运行速度不得超过（ ）km/h。《技规》第271条
A.120
B.40
C.50
D.80
[单选题]钢轨头部侧面磨耗在钢轨踏面（按标准断面）下（）处测量。
A.16mm
B.17mm
C.18mm
D.19mm
[单项选择]湿热型经间期出血的主证中，哪项是错误的（）
A. 便坚尿黄
B. 经间期出血量少
C. 色红，质粘腻
D. 神疲乏力
E. 胸闷烦躁
[判断题]违反治安管理行为在6个月内没有被公安机关发现的,不再给予行政处罚。
A.正确
B.错误
[单选题]面容枯槁、面色苍白或铅灰、表情淡漠、眼眶凹陷称为
A.危重病容
B.满月病容
C.二尖瓣病容
D.急性病容
E.慢性病容
[单选题]自然损坏是指在正常使用条件下由于摩擦和化学等因素的长期作用而逐渐产生的损坏。
A.对
B.错
[多选题]下列各项不属于"证"的是
A.气血亏虚
B.便秘
C.风寒犯肺
D.中风
E.疮疡
[单选题]低温甲醇洗是一种 物理吸收法，在（ ）下对CO、H2S、COS的吸收具有溶解度大，选择性高的特点。
A.低温高压
B.
低温低压
C.
高温高压
D.
高温低压
[判断题]( )509. BC005组块立面片、两立柱下端中心距，是与导管架有装配要求的精确尺寸，所以应从垫墩摆放、立柱就位、组装焊接整个过程都要随时进行检控，避免尺寸偏离超差
A.正确
B.错误
[单选题]志愿服务精神的精髓是（ ）精神。
A.奉献
B.友爱
C.进步
D.互助
[判断题]生产经营规模较小的，可以不建立应急救援组织，但应当指定兼职的应急救援人员。( )
A.正确
B.错误
[多选题]齿痕舌形成与下列哪些因素有关
A.脾阳虚衰
B.水湿内停
C.肝气郁滞
D.肺气不宣
[判断题]( )在 G54 中设置栏中的数值是工件坐标系的原点相对机床坐标系原点偏移量。
A.正确
B.错误
[填空题]标准椭圆型封头的有效厚度不小于（）主要原因是保证标准椭圆型封头的刚度要求。
[判断题]CRH380A统型动车组进行3次扩展供电工作时，空调功率不变。
A.正确
B.错误
[单项选择]三级甲等医院的副主任医师，三级乙等和二级甲等医院的主任医师，信用等级最高可向上推翻（）个等级，且推翻后的信用等级不得超过（）级。
A. 2；AA
B. 2；AA+
C. 1；AA
D. 1；AA+
[填空题]在10kV断路器工频交流耐压试验中，试验电压为（）kV。
[判断题]检修工作时，工作负责人（监护人）因事可以短时离开工作现场。
[单选题]安全生产的监督管理”一章中的“监督”是广义上的监督，既包括政府及其有关部门的监督，也包括（）的监督。
A.安监部门
B.协会组织
C.社会力量
D.民间组织
[填空题]利用IIS建立的Web站点的4级访问控制为IP地址限制、用户验证、______权限和NTFS权限。
[判断题]办理定期存单支取或销户时,背书错误的需红线划掉,重新书写时必须填写在原信息对应位置。( )
A.正确
B.错误
[多项选择]下列项目中，作为当期营业利润抵减项目的有( )。
A. 产品广告费
B. 转让无形资产所有权收入
C. 增值税
D. 计提的坏账准备
[单选题]《安规》规定：居民区和交通道路附近立、撤杆，应设警戒范围或警告标志，并（ ）。
A.派人看守
B.通知调度
C.在工作票上签字确认
D.悬挂警示牌
[填空题]Jim’s family came to China in 1995. They’re still living here.
Jim’s family ______ ______ ______ China ______ six years.
[单选题]发动机汽缸体上平面翘曲后，应采用（ ）修理。
A. 刨削
B. 磨削
C. 冷压校正
D. 加热校正
[单项选择]一张软磁盘上存储的内容，在该盘处于什么情况时，其中数据可能丢失
A. 放置在声音嘈杂的环境中若干天后
B. 携带通过海关的X射线监视仪后
C. 被携带到强磁场附近后
D. 与大量磁盘堆放在一起后
[单选题]下作用车钩须有( )防跳性能，摆动下锁销组成时，防跳性能应良好，
A.A零次
B.B一次
C.C二次
D.D三次
[单项选择]The Kalinago tribe, on the island of Dominica, is under some historic population pressure. The (31) majority of the West Indies’ natives died (32) disease, murder or suicide during the first few hundred years of colonization. The Kalinago (33) as a tribe because of their location high in Dominica’s rugged area, which was less (34) for colonial ranches.
Today, Kalinago are among the poorest on Dominica, so many young people leave (35) studies or work and never return. It has become clear (36) the future of the Kalinago people will be endangered if more of its (37) don’t decide to stay.
One radical proposal for (38) the tribe came in 2008 from then-chief Charles Williams. He suggested making marriage to other tribal members (39) in order to preserve the bloodline of the tribe’s estimated 1,500 "pure" natives. The suggestion was not (40) , but it generated heated debate among the natives.A. compulsory
B. impulsive
C. comprehensive
D. voluntary
[判断题]对于异步电动机,国家标准规定3kW以下的电动机均采用三角形联结。
A.正确
B.错误
[多项选择]属于货币市场的金融工具有( )。
A. 国库券
B. 债券
C. 商业票据
D. 回购协议
