未知题型 根据材料回答下列问题2007年7月份北京市下列各区县中城镇居民最低生活保障人数最少的是( )。A.顺义区B.密云县C.大兴区D.昌平区

单项选择题 跨境电商店铺的设计越专业，商品溢价能力越强。

单项选择题 依托较大的平台是中小型跨境电商企业成本更低，效果更佳的选择

单项选择题 PayPal账户分为三种类型：个人账户、高级账户和商业账户。（）

未知题型 移动互联网技术成为跨境电商规模化最强劲的驱动力体现在哪些方面？（）

单项选择题 （       ）色代表兴奋、激动、热情？A. 红色B. 黄色

未知题型 Despite Hwang didn't react to his new accusation Schatten would still keep explaining his claim.A.YB.NC.NG

未知题型 阿里巴巴国际站的特点包括（）。

未知题型 听力原文： To extinguish different kinds of fires, several types of fire extinguishers have been inventeD.They must be ready for immediate use when fire breaks out. Most portable kinds operate for less than a minute, so they are useful only on small fires. The law requires ships, trains, buses and planes to carry extinguishers.Since fuel, oxygen and heat must be present in order for fire to exist, one or more of these things must be removed or reduced to extinguish a firE.If the heat is reduced by cooling the material below a certain temperature, the fire goes out. The cooling method is the most common way to put out a firE.Water is the best cooling material because it is low in cost and easy to get.Another method of extinguishing fire is by cutting off the oxygen. This is usually done by covering the fire with sand, steam or some other things. A blanket may be used to cover a small firE.A third method is called separation, which includes removing the fuel, or material easy to burn, from a fire, so that it can find no fuel.The method that is used to put out a fire depends upon the type of firE.Fires have been grouped in three classes. Fires in wood, paper, cloth and the like are called Class A fires. These materials usually help keep the fire on. Such fires can be stopped most readily by cooling with water.(30)A.Separating the firE.B.Reducing the heat.C.Removing the fuelD.Cutting off the oxygen.

判断题 南北战争中,美国曾建造过多艘铁甲舰,爆发过海战史上第一次铁甲舰之间的战斗() A、正确 B、错误