欢迎来到牛牛题库网 牛牛题库官网
logo
搜索

单项选择题

某设计依据水文站，经用皮尔逊Ⅲ参数如下：洪峰流量Qmp均值为1000m3/s，Cv＝1.0，Cs＝2.5，ΦP（P＝5%）＝2.0，经推算二十年一遇洪峰流量的设计值Qmp为（　　）。

A.5000m3/s
B.4000m3/s
C.3000m3/s
D.2000m3/s
点击查看答案&解析

相关考题

单项选择题
欧拉方程相比于N-S方程，区别为
A．前者考虑粘性作用，后者不考虑粘性作用
B．前者不考虑粘性作用，后者考虑粘性作用
C．前者考虑可压缩性，后者不考虑
D．前者不考虑可压缩性，后者考虑
单项选择题
根据下面资料，回答21-35题
Sometimes I feel that being the mother of three small children is like operating a large circus(马戏团)．21afternoon last week, my three sons playing peacefully in the back yard ( 院子),22the ball from one to another．I jumped at the chance to talk to one of my friends23the phone, but before I24to the phone, I could tell the boys had begun to quarrel with each other about something．I rushed out to25peace,but before I got there Charles had26a rock at Mark,and hit him in the eye．By the time I got to the back yard,they had begun to27about this．Even David,the oldest boy,who won' t usually fight with anybody about28,was involved(卷入) First,!29them stop fighting, and then ! examined Mark' s eye．I decided that it wasn' t going to develop into a black eye, but I felt that they should30at least a little for31they had done．"I' m going to32to your father about this when he comes home tonight,"I said．"He and I will think of how to punish you．"Things were33quiet after that for about half an hour, and then Charles34a glass in the kitchen,and at almost the same35,Mark fell out of the apple tree．
第（24）题答案
A.went
B.came
C.reached
D.got
单项选择题
胶合木构件的木板接长一般应采用下列哪一种？（　　）
A.单齿或双齿连接
B.螺栓连接
C.指接连接
D.钉连接
微信小程序免费搜题

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1

微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题