道岔的定位规定，（）正线进站道岔，为各该正线开通的位置。_高级内燃机车司机_全学科试题题库

当前学科：高级内燃机车司机

题目：单选
道岔的定位规定，（）正线进站道岔，为各该正线开通的位置。
答案： <查看本题扣1积分>

查看答案

答案不对？请尝试站内搜索

推荐知识点:

Scientists were embroiled (使卷入) last week in an international row over genetically modified cotton (GM cotton).A study in China suggested for the first time that the crop was permanently damaging the environment and that insects were building up resistance to it.The study, by the Nanjing institute of Environmental Science, combined the laboratory and field work from four Chinese scientific institutes. The study was done over a several - year period.GM Cotton had a gene resistance to the cotton bollworm (棉铃虫) and isolated from the bacterium (细菌) named Bacillus thuringiensis (Bt), but the study found that it harms the natural parasitic (寄生的) enemies of the cotton bollworm.It also indicated that populations of pests besides the bollworm had increased in Bt cotton fields and some had replaced the bollworm as the primary pest.However, the leading GM company, the US's Monsanto, which controls more than 80 per cent of the Bt cotton grown worldwide, dismissed the research.It said that the industry has always cited GM cotton as its biggest success, because it can increase yields by up to 60 per cent and reduce the need for pesticides (杀虫剂) by 80 per cent.But, unfortunately for the industry, (80) the scientists also found that the resistance of Bt cotton to bollworm decreased significantly over time.Why scientists say no to GM cotton?A．Because the cotton was genetically modified.B．Because the cotton was found to damage the environment.C．Because the cotton harms the bollworm.D．Because Monsanto dismissed the research.

嗅裂是指

简述公共事业管理组织工作的基本步骤。

人类的言语中枢布洛卡区和威尔尼克区位于大脑的（）侧。

干燥花是以自然植物经干燥处理而成的具有天然形态的花材。

喷涂的修复方法不是主要用于修复以下哪个零件（）

女性，30岁，主动脉瓣关闭不全，左室扩大，快速走路或上二楼时感心慌气短，超声心动图示左室射血分数40％，该患者的心功能诊断是（）

沉积正旋迦是（）过程中形成的岩性自下而上由（）变（）。

施工中选择起重机械，考虑不正确的是（）。

发出存货的计价和存货可变现净值的确定均属于会计政策。()