b$age<-as.numeric(b$age_at_diagnosis) 运行发现,其是转换成了数值型,但是值却变了。为何?大家去思考下,截图如下: 正确的做法是这样的 b$age1<-as.numeric(as.character(b$age_at_diagnosis)) 运行一下: 如果您欣赏本文,欢迎长按下列二维码并...
Physical activity is an importantfactorin maintaining fitness. 进行体育活动是保持身体健康的一个重要因素。 柯林斯高阶英语词典 The cost of butter quadrupled and bread prices increased by afactorof five. 黄油价格涨了 4 倍,面包价格涨了 5 倍。
A number is a multiple of 8 and a factor of 32. What is the number? A. 8 B. 16 C. 24 D. 32 相关知识点: 试题来源: 解析 A。8 的倍数有 8、16、24 等,32 的因数有 1、2、4、8、16、32,既是 8 的倍数又是 32 的因数的是 8,所以选择 A。
我是Lincoln,现在在苏黎世联邦理工学院的读博,目前是博士三年级,平时会在保罗希尔研究所做博士科研,然后专业方向是固态锂金属电池。 写这篇文章,首先是想跟大家分享一下,我在苏黎世联邦理工的读博体验,还有一些趣事, 其次,主要是为了给后续...
百度试题 结果1 题目如何能找到产品的成功关键因子(Key success factor)。√ A. 产品的卖点 B. 客户的买点 C. 价值分析曲线 D. 价格分析曲线 相关知识点: 试题来源: 解析 C 正确答案: C 多选题反馈 收藏
ASTANA, May 21 (Xinhua) -- China has been a key factor in the development of Kazakhstan and Central Asian countries, a fact that has become more prominent after the first China-Central Asia Summit, said a senior Kazakhstan official in a recent interview with Xinhua. ...
17.In making a speech,the number of listeners is also an important factor ___.( ) A.to be consideredB.being considered C.consideredD.considering 试题答案 在线课程 分析在作演讲的时候,听众的数目也是一个需要考虑的因素. 解答答案A根据句意可知,因素是需要考虑的,应该使用不定式表示将来要发生的动作...
Among the following numbers, which one is not a factor of 30? A. 5 B. 7 C. 6 D. 10 相关知识点: 试题来源: 解析 B。30 除以 5 等于 6,30 除以 6 等于 5,30 除以 10 等于 3,都没有余数,所以 5、6、10 是 30 的约数。30 除以 7 有余数,所以 7 不是 30 的约数。
Despite advances in nuclease-based genome editing technologies, correcting human disease-causing genomic inversions remains a challenge. Here, we describe the potential use of a recombinase-based system to correct the 140 kb inversion of the F8 gene f
It is not known if ULTOMIRIS is safe and effective in children younger than 1 month of age. IMPORTANT SAFETY INFORMATION What is the most important information I should know about ULTOMIRIS? ULTOMIRIS is a medicine that affects your immune system and can lower the ability of your immune syst...