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【多选题】
茯苓含()。
A.
β茯苓聚糖
B.
茯苓酸等
C.
麦角甾醇
D.
胆碱
E.
卵磷脂等
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举一反三
【判断题】The ears forgive the noise because the noise realizes his fault. ( )
A.
正确
B.
错误
【单选题】滚动轴承一般由( )组成。
A.
外圈、内圈、保持架
B.
外圈,保持架、滚动体
C.
外圈、内圈、滚动体和保持架
D.
外圈和内圈
【单选题】有如下SQL语句: SELECT DISTINCT productName, price FROM product WHERE (price>(SELECT AVG(price) FROM product)) ORDER BY price DESC; 下面说法错误的是( )。
A.
"SELECT AVG(price) FROM product "是子查询
B.
"ORDER BY price DESC"是指按price从低到高顺序排列
C.
查询结果显示的是大于平均价格的产品记录
D.
此查询显示的字段只有"productName"和"price"
【单选题】关于频率分布直方图中的有关数据,下列说法正确的是(  )
A.
直方图的高表示该组上的个体在样本中出现的频率与组距的比值
B.
直方图的高表示该组上的个体在样本中出现的频率
C.
直方图的高表示取某数的频率
D.
直方图的高表示该组上的个体数与组距的比值
【多选题】In the videos related to procrastination, a careful distinction was made between "process" and "product." Select the following true statements related to "process" and "product."
A.
As the videos emphasized, "product" refers to being productive--to getting things done in a small amount of time to maximize your ability to go off and have fun.
B.
As stated in one of this week's videos, you want to avoid focusing on a process because thinking about a process is frequently what triggers the pain that causes you to procrastinate.
C.
The Pomodoro technique is effective because it helps you get into the flow of the process.
D.
"Product" refers to the outcome of a task. Examples of "product" include finishing a homework set or completing the writing of a report.
【简答题】滚动轴承一般是由 、 、 和 组成的。
【判断题】人类的性和动物的性没有区别。
A.
正确
B.
错误
【判断题】滚动轴承一般由外圈、内圈和滚动体组成。
A.
正确
B.
错误
【简答题】After determining the target audience for a product or service, advertising agencies must select the appropriate media for the advertisement. We discuss here major types of media used in advertising. ...
【单选题】You need to list the name and price of each product, sorted by price from highest to lowest.Which statement should you use? A. SELECT Name,Price FROM Product ORDER BY Price DESC B. SELECT Name,Pr...
A.
Option A;
B.
Option B;
C.
Option C;
D.
Option D
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