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【多选题】
关于收入弹性的论述中,正确的是A.
收入弹性就是消费者收入变化对某种商品需求量的影响
B.
所有商品的收入弹性都是正值
C.
吉芬品的收入弹性小于零
D.
如果某种商品收入弹性大于零小于1,则需求量增加速度会小于收入增加速度
E.
如果某企业生产的商品需求收入弹性大于1,则经济繁荣期该企业会获得更多收益
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【简答题】请各位同学上传上课照片
【单选题】musical and artistic works and lasts for the lifetime of its ... (5), (5)为
A.
sue
B.
licensee
C.
assign
D.
creator
【单选题】根据以下材料，回答题 The Magic of Sound Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays， music has an added function: it not only moves people but also can sh...
A.
High sound of 150 decibels can kill a healthy rat.
B.
The vibration of air can produce infrasonic waves.
C.
We cannot play high-pitched music with ordinary musical instruments.
D.
If the intensity of infrasonic wave exceeds 160 decibels， it is extremely harmful.
E.
Dolphins， whales and bats can make such high-frequency sound.
F.
Therefore， the sound of ordinary musical instruments cannot harm your health.
【判断题】对于紧固件和实心零件(如螺钉、螺栓、螺母、垫圈、轴等),若剖切平面通过它们的基本轴线时,则这些零件都按不剖绘制,仍画外形;需要时,可采用局部剖视。
A.
正确
B.
错误
【简答题】Copyright is the 1 ________ legal right, given to the originator or their assignee for a 2 ________ number of years, to print, publish, perform, film, or record literary, musical, or artistic mater...
【多选题】With its beautiful cityscape and rich musical and artistic cultural heritage, Venice has been one of the most famous tourist destinations in the world, inscribed on the World Heritage List in 1987. 句式...
A.
be listed as
B.
be declared as
C.
be among the … List
D.
be on the … List
E.
be added on the … List
【简答题】请各位同学以学习笔记的方式上传收入总额的学习笔记。
【多选题】装配图中对于紧固件和实心件画法的说法正确的有()。
A.
如果剖切平面通过它们的基本轴线时，这些零件均按不剖绘制，仍然画外形。
B.
如果剖切平面通过它们的横断面时，这些零件均按不剖绘制，仍然画外形。
C.
在需要时，可采用局部剖视图表达相应结构。
D.
这类紧固件和实心件包括螺钉、螺栓、螺母、键、销。球和轴等。
【简答题】IP is divided into two categories: , which includes inventions (patents), , industrial designs, and ; and Copyright, which includes literary and artistic works such as novels, poems and plays, films, ...
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