本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-03-09到2020-06-28
本篇答案更新状态:已完结
1、 问题:请计算地震波垂直入射到不同地层岩性（shale泥岩，sand砂岩，carbonate碳酸盐岩）接触的反射界面(interface)的垂直反射系数（具体公式见2.4知识点第7张ppt），并分析三种反射界面的地震反射波特点。(其中：velocity：速度；density：密度)。可以手写拍照后上传。
评分规则: 【 interface1：R=0.12interface2：R=-0.12interface2：R=0.23
】 点我阅读全文
本答案对应课程为:点我自动跳转查看
本课程起止时间为:2021-03-08到2021-10-31
本篇答案更新状态:已完结
1、 问题:Comment on the sentences taken from Chapter 41 in Moby Dick. 1．Nor did wild rumors of all sorts fail to exaggerate, and still the more horrify the true histories of these deadly encounters. For not only do fabulous rumors naturally grow out of the very body of all surprising terrible events,—as the smitten tree gives birth to its fungi; but, in maritime life, far more than in that of terra firma, wild rumors abound, wherever there is any adequate reality for them to cling to. And as the sea surpasses the land in this matter, so the whale fishery surpasses every other sort of maritime life, in the wonderfulness and fearfulness of the rumors which sometimes circulate there. 点我阅读全文
本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-02-24到2020-06-30
本篇答案更新状态:已完结
1、 问题:The general process of gathering, organizing, summarizing, analyzing, and interpreting data to assist in making effective decisions is called:
选项：
A:statistics.
B:descriptive statistics.
C:inferential statistics.
D:levels of measurement.
答案: 【statistics.】 点我阅读全文
为任意数