Indion Ina 225H, is a heterogeneous, selective, recyclable, and eco-benign catalyst for liquid phase electrophilic substitution reactions of indoles with aldehydes to afford the corresponding bis(indolyl)methanes in excellent yields in short reaction time. The versatility of this method has been prove...
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CH221K在信号处理和兼容性方面有着出色的表现，PG引脚可定制其他功能，同样的CH221K工作耐压低，且PD通信引脚CC1、CC2需外置5.1K下拉电阻。HUSB238工作耐压达30V，可通过SCL，SCA配置其他快充协议，内置OVP，UCP，OTP。标源微的AS225K支持PD3.0和QC2.0，AS225KLE(PTP)可模拟emarker，AS225KH 支持PD3.1。结...
Haida HD668 225/60R16 98H AS A/S Performance Tire Fits: 2010 Subaru Outback 2.5i, 2005 Subaru Outback i Check if this fits your vehicle About this item Size: 225 60R16 Season: All Season Performance: Performance Car Type: Passenger ...
发货地 广东深圳 商品类型 电子元器件 、 连接器件 、 其他连接器 商品关键词 AS0A621、 HASB、 7H、 富士康FOXCONN、 原厂封装 商品图片 商品参数 品牌: 富士康FOXCONN 封装: 原厂封装 批号: 21+ 数量: 1000 RoHS: 是 产品种类: 电子元器件 最小工作温度: -40C 最大工作温度: 100C 最...
百度试题 结果1 题目某悬臂桁架上弦截面为矩形b×h=200mm×300mm,轴向拉力设计值N=225kN,弯矩设计值M=22.5kN·m,混凝土为C30,钢筋为HRB335级,as=a's=35mm,试计算截面纵向受力钢筋As和A's。相关知识点: 试题来源: 解析 是反馈 收藏
元素的原子在分子中吸引电子对的能力叫做该元素的电负性。 随着原子序数的递增,元素的电负性呈周期性变化:同周期从左到右,主族元素电负性逐渐增大;同一主族从上到下,元素电负性呈现减小的趋势非金属元素的非金属性越强,则其电负性越大。A选项中,N的非金属性弱于O,所以,电负性F>O>N。B选项中,Cl的电负性小于F。
Tourism engaging with the public health agenda: Can we promote 'wellville', as a destination of choice?: A response to Hartwell, H., et al. Public Health 2012; 126:1072-1074. 来自 Semantic Scholar 喜欢 0 阅读量: 39 作者:R Philipp,P Thorne ...
阅读理解 I had to knock on the taxi to get his attention.Finally, the driver, a man about 60, looked up from behind the wheel and apologized, “I'm sorry, but I was reading a letter. He sounded as if he had a cold or a cough. Since I was in no hurry
题目The coast of the State of Maine is one of the most irregular in the world.A straight line running from the southernmost coastal city to the northernmost coastal city would measure about 225miles.If you followed the coastline between these points,you would travel more th...