中国GIS的持续发展、形成行业和走向产业化的阶段开始于哪年（）

A . 90年代 B . 80年代 C . 60年代 D . 70年代

A . 上升 B . 跨越 C . 跃进 D . 跃升

A . ①②③ B . ①③④ C . ①②④ D . ②③④

A . A、科技建材； B . B、高强建材； C . C、绿色建材； D . D、高性能建材。

A . 对外贸易 B . 加工制造业 C . 钢铁工业 D . 旅游业

A . “生态+” B . “互联网+” C . “产业+” D . “技术+&rdquo

A . 正确 B . 错误

A . 90年代末 B . 80年代初 C . 90年代初 D . 80年代末

A . 第一次国内革命时期 B . 解放战争前期 C . 土地革命战争前期 D . 党的七大召开前后

A . A、钢铁 B . B、采矿业 C . C、纺织业 D . D、运输业

A . 20世纪80年代中期至90年代初期 B . 20-世纪90年代初期至90年代中后期 C . 20世纪90年代中后期 D . 21世纪以来

是 否

是 否

选项格式A.With the rapid development of industrialization and urbanization of China's economy, haze appears in a large number of cities and their surrounding areas, which is considered to be one of the major realistic problems facing the sustainable development of China's social economy. B.Along with the stage of China's economy entering the rapid development of industrialization and urbanization, the smog phenomenon has appeared in many cities in China and its surrounding areas, and is considered to be one of the major practical problems facing the sustainable development of China's social economy. C.As China has seen rapid industrialization and urbanization, smog prevails in a large number of Chinese cities and their surrounding areas, and is considered one of the major problems threatening China’s social and economic sustainability. D.With China's economy entering the stage of rapid industrialization and urbanization, smog phenomenon appears in a large number of cities and their surrounding areas in ChinA.With the rapid development of industrialization and urbanization of China's economy, haze appears in a large number of cities and their surrounding areas, which is considered to be one of the major realistic problems facing the sustainable development of China's social economy. B.Along with the stage of China's economy entering the rapid development of industrialization and urbanization, the smog phenomenon has appeared in many cities in China and its surrounding areas, and is considered to be one of the major practical problems facing the sustainable development of China's social economy. C.As China has seen rapid industrialization and urbanization, smog prevails in a large number of Chinese cities and their surrounding areas, and is considered one of the major problems threatening China’s social and economic sustainability. D.With China's economy entering the stage of rapid industrialization and urbanization, smog phenomenon appears in a large number of cities and their surrounding areas in Chin选项格式A. It is considered to be one of the major practical problems facing China's sustainable social and economic development.

A．我国清洁能源汽车前景光明，且已经处于世界领先地位 B．清洁能源汽车可以推动我国汽车、能源等产业健康发展 C．我国新能源汽车产业链逐渐完善，社会综合效益较明显 D．清洁能源汽车将成为我国汽车行业赶超欧美国家的利器

A．规模大 B．价值高 C．竞争力强 D．价格高

A．铁犁牛耕的出现 B．铁制工具的大量使用 C．农业书籍和专著的出现 D．农艺措施大幅度提高

A．环保责任 B．经济责任 C．环境责任 D．社会责任