商品总价值的组成一般不包括()。 A.成本 B.利润 C.消费者剩余 D.生产者剩余 发布时间:2018-04-04 20:41 │ 来源:www.tikuol.com 题型:单项选择题 问题: 商品总价值的组成一般不包括()。A.成本B.利润C.消费者剩余D.生产者剩余
题型:单项选择题 Read and write. (读短文,根据短文内容填写学生卡) Sally, Tom and Joey are my friends. Sally is a tall girl. She comes from America. She has big eyes and small ears. She likes flying the kite. Tom isn’t tall. He is a short boy. He has small eyes. He is a UK boy. He likes jumping. Joey is from Canada. He is a tall boy with a big nose. He likes drawing?1. Student Card Name: Sally Gender: _____ Country: USA Description: _____ small ears _____ Hobby: fly the kite 2. Student Card Name: ______ Gender: boy Country: ______ Description: short Hobby: _____ 3. Student Card Name: Joley Gender: ______ Country: ______ Description: short Hobby: ______ 查看答案
题型:单项选择题 如图所示,间距为L的光滑平行金属导轨,水平地放置在竖直方向的磁感应强度为B的匀强磁场中,一端接阻值为R的电阻。一个电阻是R0,质量为m的导体棒放置在导轨上,在外力F作用下从t=0时刻开始运动,其速度随时间的变化规律,不计导轨电阻,求:(1)从t=0到时间内电阻R产生的热量。(2)从t=0到时间内外力F所做的功。 查看答案