选择与画线部分意思相同或相近的选项。 Dolphins are very cle 发布时间:2017-05-15 01:42 │ 来源:www.tikuol.com 题型:选择题 问题: 选择与画线部分意思相同或相近的选项。Dolphins are very clever animals. [ ]A. uglyB. interesting C. smart D. friendly
题型:选择题 下列关于xDSL技术的说法中,错误的是( )。A.xDSL是一种以普通电话线为传输媒介的传输技术B.xDSL信号传输距离愈长,信号衰减愈大,愈不适合高速传输,所以xDSL只能工作在用户环路上C.xDSL的上下行传输速率必须对称D.xDSL的高带宽要归功于先进的调制解调技术 查看答案
题型:选择题 Assume that the supply of ethanol is relatively more elastic than the demand for ethanol. Compared to an initial competitive equilibrium in the market for ethanol, the imposition of a per-gallon tax on producers of ethanol will most likely:()A. decrease producer surplus by the total amount of tax collected.B. decrease producer surplus by less than it reduces consumer surplus.C. decrease the sum of consumer and producer surplus by the amount of tax collected. 查看答案