Man has been storing up useful
knowledge about himself and the universe at the rate which has been spiraling
upward for 10,000 years. The{{U}} (21) {{/U}}took a sharp upward leap with the invention of writing, but even{{U}} (22) {{/U}}it remained painfully slow for several centuries. The next great leap forward{{U}} (23) {{/U}}knowledge acquisition did not occur{{U}} (24) {{/U}}the invention of movable type in the 15th century by Gutenberg and others.{{U}} (25) {{/U}}to 1500, by the most optimistic{{U}} (26) {{/U}}Europe was producing books at a rate of 1000 titles per year. This means that it{{U}} (27) {{/U}}a full century to produce a library of 100,000 titles. By 1950, four and a half{{U}} (28) {{/U}}later, the rate had accelerated so sharply that Europe was producing 120,000 titles a year.{{U}} (29) {{/U}}once took a c A. in B. at C. on D. for [单项选择]根据巷道()每50米应安设一个顶板离层指示仪。
A. 围岩 B. 支护情况 C. 支护质量 [单项选择]股肿病久,伴肢肿不消,沉重麻木,倦怠乏力等,常辨证为()
A. 气滞血瘀 B. 气虚血瘀 C. 寒湿瘀滞 D. 湿热下注 E. 水湿内停 [简答题]叙述CRH2A型动车组牵引主电路的基本工作原理。
[多选题] 有下列情形( ),可从轻或减轻处理。
A.情节轻微且未造成损害 B.主动报告 C.自查发现违规问题并落实整改 D.有证据证明,对授意、指使、强令、胁迫其违规有抵制行为或向上级报告 [单选题]原发肾病综合征饮食治疗正确的是
A.严格限制水的摄入量以免加重水肿 B.水肿阶段给予低盐饮食 C.低蛋白饮食以免加重蛋白尿 D.低热量饮食以免出现脂肪肝 E.低钙饮食以免肾结石 [单选题]市场营销的范围是选定的目标市场,而不是( )
A.全部市场里的部分需求 B.部分市场里的全部需求 C.部分市场里的部分需求 D.全部需求的部分市场 E.全部市场里的全部需求 [单项选择]我国原油所含有害微量元素的特点为()
A. 钒少镍多 B. 钒多镍少 C. 钒镍等量 D. 钒镍量均多 [填空题]车号人员应按<--NRC-->核对现车和货运票据,无误后,按规定与机车乘务员办理交接。
[单项选择]Many experts hold that the forthcoming decline of polar bears is______.
A. directly caused by the diminishing Arctic ice B. directly caused by the atmospheric buildup of heat-trapping gases C. a symbol of the weather change D. absolutely based on the emission of heat-trapping gases 我来回答: 提交
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