可以区别甾体皂苷和甾体苷元的反应是()。 A.醋酐—浓硫酸反应 B.kedde反应

题型:单项选择题

问题:

可以区别甾体皂苷和甾体苷元的反应是()。

A.醋酐—浓硫酸反应

B.kedde反应

C.Molish反应

D.MR-HCL反应

E.K-K反应

考点:中药执业药师中药学专业知识(二)中药执业药师中药学专业知识(二)50
题型:单项选择题

投资机会选择主要包括投资机会寻找和筛选两个步骤。( )

题型:单项选择题

阅读理解。

     根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     Watching a sporting event with family and friends under the sun is a great experience in summer.

   1   In the United States, heat exposure led to 8,000 deaths between 1979 and 2003. Luckily, a

little prevention can go a long way towards making sure of an enjoyable day.

     Know the danger

     Heat-related illnesses do not require record-breaking temperatures to occur.   2   The body's

temperature can reach 106 or 107 degrees Fahrenheit on a 90-degree day, creating a potentially

deadly situation. Factors such as age, weight or a medical condition can influence people.

     Drink plenty of water

       3   Sweating is your body's key way to keep cool, so drink water to stay well hydrated(含水的)

before you feel thirsty. A cool beer may sound perfect on a hot day, but drink responsibly. Alcohol

stops the body's cooling system and causes you to go to the bathroom frequently.

         4    

     Wear light-colored and loosely fitting clothing, so air can go around your body and help keep you

cool. A hat is a must to help you keep cool, since your head contains many blood vessels(血管), and

sun block(防晒乳) is always a good idea.

     Take action

     What should you do if you are suffering from the heat while watching your favorite event?

     Get up and go. It is a simple piece of advice, but could make the difference between a quick recovery

and something more severe that requires medical attention. The ideal thing is to move yourself from the

position you're in to an area that is a little cooler.  5  

A. Dress for the occasion

B. Weather-related causes

C. In hot weather, it is essential to stay hydrated.

D. You may miss a little of the action, but it beats missing a lot.

E. But when you add sun exposure to the crowds, the results can be deadly.

F. It is also important to take advantage of services the equipment provides.

G. Temperatures between 80 and 90 degrees Fahrenheit can be dangerous.

题型:单项选择题

安装Windows Server 2003时,用户主机要求至少不低于()的内存和不低于()的硬盘。

题型:单项选择题

什么是紧急避险?是否应负刑事责任?

题型:单项选择题

下列选项,属于出车前安全检视的内容的是()。

A.查看行车记录

B.检查油液

C.检查轮毂温度

D.检查随车工具

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