下列关于色甘酸钠预防哮喘发作的机制的叙述,正确的是( )A.稳定肥大细胞膜,抑制过敏

题型:单项选择题

问题:

下列关于色甘酸钠预防哮喘发作的机制的叙述,正确的是( )

A.稳定肥大细胞膜,抑制过敏介质释放

B.阻止抗原与抗体结合

C.有较强的抗炎作用

D.有较强的抗过敏作用

E.直接松弛支气管平滑肌

考点:中医执业助理医师中西医结合执业医师
题型:单项选择题

如图所示是“研究凸透镜成像”的实验图。

(1)若在光屏上(光屏未画)得到清晰缩小的实像,则蜡烛可能置于透镜左边a、b、c、d、e五点中的            点处,               机就是利用此成像特点制成的。

(2)若将蜡烛放在e处,则将会成              (填“正”或“倒”)立、            (填“放大”或“缩小”)的            (填“实”或“虚”)像。

(3)若成等大的实像是,应将蜡烛放在               点处。

题型:单项选择题

软物质包括:                                                                   。(写出三种即可)

题型:单项选择题

After a year of preparing herself, Laura Dekker has been given permission to sail around the world. “I was so happy that I almost jumped into the river,” Laura said, after learning of the court’s verdict(判决).

The 14-year-old was born on a ship in the South Pacific, and currently lives with her father on a boat. When child protection agencies heard about her plan to sail alone, they took the case to court and prevented her from making such a dangerous voyage.

Since the decision, though, Laura had been preparing with her father to convince the court that she was ready. Later on, she received the books and other materials she would need for school while she was at sea. She added safety equipment to a new, big ship. And she took her first aid course to learn several survival skills, like how to put out fires on the boat, take care of her own injuries and deal with lack of sleep. She also planned a safer course --- adding alternate routes(备用路径) to avoid pirate attacks, and planning a course that would have her on dry land as she moved from port to port across the globe.

Even with all of the added preparations, the trip still has its risks. In early June, 16-year-old Abby Sunderland, an American, had to abandon(放弃) her attempt to become the youngest sailor to travel around the world. Her ship’s mast(桅杆) broke due to rough waters in the Indian Ocean, and she was rescued by a French fishing ship.

Laura plans to take longer than Abby for her voyage, and is using a larger and more stable boat. If she finished successfully in less than two years, she will take the title from current record-holder Jessica Watson, of Australia, who was 16 when she completed the journey.

小题1:Which of the following is TRUE of Laura?

A.She prepared the voyage at the age of 12.

B.She lost her mother after she was born.

C.She was allowed to sail around the world finally.

D.She wanted to donate money made from the voyage.小题2:At first, child protection agencies were against Laura’s plan because ____.

A.it was considered to be a dangerous trip

B.Laura had to finish her schooling first

C.it would cost Laura too much time and money

D.Laura wasn’t prepared for the sailing alone小题3:What is Mr. Dekker’s attitude towards Laura’s trip?

A.Doubtful

B.Supportive

C.Uncertain

D.Neutral(中立的)小题4:Paragraph 3 mainly talks about ____.

A.how Laura convinced the court

B.why Laura needed to study at sea

C.how Laura prepared for the voyage

D.where Laura could avoid pirate attacks小题5: The person who keeps the record comes from ____.

A.Holland

B.America

C.India

D.Australia

题型:单项选择题

下列关于国际收支统计间接申报的表述正确的有()。

A.国际收支统计间接申报方式包括纸质申报和网上申报两种方式

B.纸质申报是指客户在规定时限内填写申报单据中的申报信息后交给银行,完成申报义务

C.机构客户可直接通过网上申报方式办理国际收支申报

D.个人客户经审批后可以通过网上申报方式办理国际收支申报

题型:单项选择题

女性,48岁,因患乳腺癌,准备行乳腺癌根治术,需做术前导尿,请用普通导尿管为患者做留置导尿术。

更多题库