皮皮学，免费搜题
登录
搜题
【判断题】
在装配图中,零件的工艺结构如倒角、圆角、退刀槽等允许省略不画。A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】B London: It's well known that Charles Darwin's famous theory of evolution (进化) annoyed many people because it was against the Biblical view of creation. But few know that it also created problems for...
【简答题】prefix="o" ns="urn:schemas-microsoft-com:office:office" 按照所用材料的不同,建筑结构分为哪几类,各有什么特点? ?xml:namespace>
【单选题】When Charles Darwin explained evolution (进化) , the process he saw was natural selection (选择) . It turns out human selection can also cause plants to evolve. Take the case of the snow lotus, a rare(稀少的...
A.
type of snow lotus called Saussurea laniceps is used in Tibetan and Chinese medicine and is increasingly demanded by tourists. The largest plants are picked, and that occurs during their only flowering period. The result is that only smaller, unpicked plants go to seed. Selection caused by humans is a powerful force, according to some scientists. They studied the plants picked over time and also compared the snow lotuses growing in heavily harvested areas with those found in places where peo-ple rarely picked them. They reported in an article that the heavily harvested snow lotuses have been getting shorter o-ver the last century, while those in areas not picked have remained the same. They found that in the heavily harvested areas, where only the smaller plants got to reproduce, the average height was 5.3 inches. The same plants in rarely harvested areas averaged 9 inches in height. And they noted that another type of snow lotuses which is not often picked, has not been changing. 69. What does the word ' that' ( line 3, para. 3) refer to? [ A] Research done by Darwin. [
B.
] Seeds of Saussurea laniceps by natural selection. [ C] The picking of Saussurea laniceps by tourists. [ D ] The Saussurea laniceps used in traditional Chinese medicine.
【简答题】课后作业: 有一家服装公司,在其风衣初上市时,采用推销员带着样品和产品目录走访批发商和零售商,大力推销自己的风衣产品,但批发商和零售商均不愿意经销此种新产品,产品销售严重受阻,经过一段时间后,企业改变促销手段,运用大众传媒如电视、广播、报纸等,大力宣传此风衣的种种优点,创造出消费者强烈需要此风衣的局面,于是成群的消费者涌向百货商店购买此种风衣,迫使零售商不得不向批发商订购,而最后批发商亦不得不向此...
【简答题】宣纸有何特点?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
