主页
学科
搜索
账户
常见问题
当前学科:第三章放射性物品运输容器和警示标志
题目:
判断题
托运人应当按照《放射性物质安全运输规程》(GB11806)等有关国家标准和规定,在放射性物品运输容器上设置警示标志。
A . 正确
B . 错误
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:
颅内疾患所致的偏瘫,肌松药的应用不正确的是()
他人在场有时会产生促进作用,而有时又反而会产生抑制作用,其原因是()。
国标规定饲料粗脂肪含量在10%以上(),允许相对偏差为()。
小儿脉象平和,较成人()
过滤器主要由筒体和过滤网组成,过滤网做成与筒体()。
雌激素的作用不包括()
正常胎儿循环时血氧饱和度最高的部位在
从正常思维的反向路线来探求解决问题的思维方法属于策划思维的()。
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.
常用缓冲液作为pH调节剂的是()