转向架相邻两动轮的轴中心之间的距离叫（）。A、轮距 B、轴距 C、轴心距离 D、轮心 发布时间：2017-07-07 01:00 │ 来源：www.tikuol.com 题型：单项选择题 问题： 转向架相邻两动轮的轴中心之间的距离叫（）。A、轮距B、轴距C、轴心距离D、轮心距离
题型：单项选择题 在某二级公路(v=80km/h)上，有一变坡点，其桩号为K6+100，变坡点的标高为215.000m，已知i1=-2.1%，i2=+1.7%。并已知在该变坡点处设有一盖板涵，涵顶高程为215.700m，要求涵顶铺筑不少于0.10m的沥青面层。规范规定：当v=80km/h时，竖曲线的极限最小半径：R凸=3000m，R凹=2000m；竖曲线的最小长度：Lmin=70m。 试完成以下的设计与计算：确定竖曲线的范围； 查看答案
题型：单项选择题 Read and choose. 今天 Mike，Tom 和他们的父母一起乘火车去旅游了。阅读短文，选择确的答案。 Mike and Tom are good friends. They often play together. Today is Sunday. It's a sunny day. They will go on a trip to Beijing with their parents. They are happy. On the train, they see many men, women and children. Some people are talking loudly. Some people are talking quietly. Some are sleeping. "Look! I see a goat." Mike says loudly. "Where? Please point to it." Tom asks. "There." Mike says. "I see. Not one goat. Five goats." Tom says. Mike says, "I like to take train. It's fun." "Me too. I like to go on a trip." Tom says. They have a happy Sunday. 1. Mike and Tom are .[ ]A. sisters B. brothers C. friends2. —What is the weather like? —It's . [ ]A. sunny B. windy C. rainy3. They go on a trip with their .[ ]A. grandfather B. parents C. teacher4. How many goats do they see?[ ]A. Five. B. Ten. C. Seven5. Do they have a happy Sunday?[ ]A. No. B. Yes. C. I don't know.6. Does Mike like to take train?[ ]A. Yes. B. No. C. I don't know. 查看答案
题型：单项选择题 某公司发行债券筹资，票面总金额为1000万元，偿还期10年，票面利率5%，发行费用率1%，公司所得税率为25%。则该债券资金成本率为（）。A．1.67%B．3.78%C．5%D．5.05% 查看答案