Between the invention of agriculture
and the commercial revolution that marked the end of the Middle Ages, wealth and
technology developed slowly indeed. Medieval historians tell of the centuries it
took for key inventions like the watermill or the heavy plow to diffuse across
the landscape. During this period, increases in technology led to increases in
the population, with little if any appearing as an improvement in the median
standard of living. Even the first century of the industrial revolution produced more "improvements" than "revolutions" in standards of living. With the railroad and the spinning and weaving of textiles as important exceptions, most innovations of that period were innovations in how goods were produced and transported, and in new kinds of capital, but not in consumer goods. Standards of living improved A. shows that the author believes that slaves were commodities. B. reveals that lower class people in the nineteenth century were really slaves. C. reinforces the idea that the quality of life really had not changed much over the centuries. D. comments on the long-lasting effects of slavery from Roman times. [多选题]439.煤矿生产是地下作业,地质条件多变,时刻受到( )顶板等五大自然灾害的威胁。
A.A、水 B.B、火 C.C、瓦斯 D.D、煤尘 [单项选择]支队级单位领导班子成员因客观原因一时不能配齐的,主官空缺时间最长不得超过()个月,军政主官不得同时出现空缺。
A. 1 B. 2 C. 3 D. 6 [填空题]电力企业消耗的主要能源品种包括煤和原油及其制品、燃气及制品、( )等几大品种。
[判断题]BA017注水井作业释放封隔器时,可以用配水间(站)泵压正注直接进行释放。
A.正确 B.错误 [判断题]火灾中以柱状气团形式上升的热流为火羽流。
A.正确 B.错误 [判断题] 按正弦规律随时间做周期性变化的电量称交流电。 ( )
A.正确 B.错误 [单选题]股道号码信号六道,昼间——左臂向左下方,右臂向右下方各斜伸( )角,夜间白色灯光作圆形转动后,再左右摇动 。
A.30? B.45? C.90? [多选题]邓小平关于社会主义初级阶段的论断,使我们对社会主义建设的()有了更加清醒的认识。
A.长期性 B.复杂性 C.简单性 D.艰巨性 [填空题]工件通电的方式有两种,一种是(),一种是()。
[判断题]金属罐壁颤抖,罐体发出强烈的噪声,罐内油品发出的剧烈“嘶嘶”声)时,应立即发出撤离信号,所有指战员迅速按既定路线撤离;来不及撤离的,依托地形、地物等掩体进行紧急避险;撤离后,迅速清点人员。
A.正确 B.错误 [单选题]探头在工件探测面上用手工或自动移动的过程,称为( )。
A.扫查 B.测定 C.校正 D.调谐 [多项选择]依照我国现行法律规定,下列合同中为要式合同的是:( )。
A. 自然人之间的借款合同 B. 融资租赁合同 C. 建设工程合同 D. 租赁期为3个月的租房合同 [简答题]城濮之战,楚国中军的主力是谁?
[单选题]对稳定的维持性血液透析患者,血液透析充分性评估( )
A.1次/月 B.1次/2月 C.1次/3月 D.1次/4月 E.1次/周 [判断题]地面进攻时,分水器阵地通常设置在火势蔓延方向的上风、侧上风室外,存在强辐射、浓烟、倒塌等安全风险时应保持足够的安全距离。
A.正确 B.错误 [单项选择]慢性颅内血肿是指出现症状在伤后()
A. 3天内 B. 3周以上 C. 3天至3周 D. 4周以上 [单选题]需越过因故不能开放的线路所通过信号机时,列车调度员需要发布调度命令,受令者为( )。
A.驻站联络员 B.车站值班员 C.司机 D.车站值班员和司机 [多选题]根据《国家电网有限公司基建安全管理规定》,下列关于施工项目经理职责说法正确的是( )。
A.A-组织建立本项目部安全管理体系 B.B-组织确定本项目部的安全管理目标 C.C-对分包队伍实行全过程的安全管理 D.D-定期组织开展安全检查 E.掠 F.掠 G.掠 [判断题]为旅客办理分票手续时,按分票的张数核收手续费。
A.正确 B.错误 我来回答: 提交
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