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{{B}}"Salty" Rice Plant Boosts
Harvests{{/B}} British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more. Tim Flowers and Tony Yeo, from Sussex University’s School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. It is estimated that each year more than 100 hectares (公顷) of agricultural land are lost because A. positive B. negative C. suspicious D. indifferent [填空题]铁路栈桥扶梯、栏杆、扶手牢固，踏板结实，固定可靠，涂有（）相间的警示颜色。
[判断题]消防控制设备对常开防火门的控制。门两侧火灾探测器任一侧的火灾探测器报警后,防火门应自动关闭。( )
A.正确 B.错误 [多选题]同业存款业务营业机构需完整留存对开户意愿和开户证明文件真实性核实的( )等记录。
A.纸质 B.视频 C.电话 [单选题] A) a little B) little C) much D) a great deal
A.A B.B C.C D.D [判断题]CTCS共分为4级列控系统。( )
A.正确 B.错误 [判断题]通知存款最低支取金额：个人为10万元；单位为50万元。
A.正确 B.错误 [单项选择]“一招鲜，吃遍天”反映了营销观念中的______。
A. 生产观念 B. 产品观念 C. 销售观念 D. 社会营销观念 [单选题]在社区研究的分析方法中，( )主要着重在对文化和社会形态的考察。
A.人类生态学的方法 B.人类学的方法 C.社会体系(系统)的方法 D.人口学的方法 [单项选择]良性肿瘤（）。
A. 髓母细胞瘤 B. 室管膜下巨细胞星形细胞瘤 C. 少突胶质细胞瘤 D. 间变型星形细胞瘤 E. 少突一星形细胞瘤 [多项选择]步进电动机的特点是( )。
A. 电动机的转速正比于脉冲频率 B. 电动机的角位移正比于脉冲数 C. 电动机转一圈的积累误差很小 D. 控制性能好 E. 电动机绕组供电电源为直流电源 [单选题]依据《中国南方电网有限责任公司电力安全工作规程》（Q/CSG510001-2015）第25. 2. 3条规定：移动式起重机作业前，应将支腿支在坚实的地面上，必要时使用（ ）或钢板增加接触面积。
A.凳子 B.石头 C.栅栏 D.枕木 [判断题]2.70. 第70题
配网系统自动化是电力系统自动化的必然趋势。 A.正确 B.错误 我来回答: 提交
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