毒物经呼吸道排出的速度主要取决于A.水溶性 B.肺泡膜内外气体的分压差 C.肺泡膜内

题型:单项选择题

问题:

毒物经呼吸道排出的速度主要取决于

A.水溶性

B.肺泡膜内外气体的分压差

C.肺泡膜内外两侧有毒气体的分压差

D.水溶性和离子化程度

E.肺泡内有毒气体的分压

考点:公卫执业医师公卫执业医师84
题型:单项选择题

在电力系统分析和计算中,功率和阻抗一般分别是指下列哪组

A.(A) 一相功率,一相阻抗

B.(B) 三相功率,一相阻抗

C.(C) 三相功率,三相阻抗

D.(D) 三相功率,一相等值阻抗

题型:单项选择题

Travel Unaccompanied

Now many young people are traveling around the world on their own, not because they have no one to travel with, but because they prefer to go alone.

Kristina Wegscheider from California first traveled alone when she was at college and believes that it is something everyone should do at least once in their life. “It opens up your mind to new things and pushes you out of your comfort zone.” Wegscheider has visited 46 countries covering all seven continents.

In foreign countries, with no one to help you read a map, look after you if you get ill, or lend you money if your wallet is stolen. It is challenging. This is what drives young people to travel alone.It is seen as character building and a chance to prove that they can make it on their own.

Chris Richardson decided to leave his sales job in Australia to go traveling last year.He set up a website, The Aussie Nomad, to document his adventures. He said he wished he had traveled alone earlier. “The people you meet, the places you visit, or the things you do, everything is up to you and it forces you to grow as a person,” said the 30­year­old.

Richardson describes traveling alone like “a shot in the arm”, which “makes you a more confident person that was ready to deal with anything”. He said: “The feeling of having conquered something on my own is a major part of what drives me each day when I'm dealing with a difficult task. I walk around with my head up because I know deep down inside that nothing is impossible if you try.”

The great 19th century explorer John Muir once said: “Only by going alone in silence can one truly get into the heart of the wilderness.”

小题1:Which of the following will Kristina Wegscheider agree with?

A.Traveling alone is a necessary experience for everyone.

B.It is more meaningful to travel in foreign countries.

C.It is comfortable to travel around without a friend.

D.Traveling abroad helps people to find new things.小题2:Traveling alone is challenging because ________.

A.it will finally build your character

B.you have to make things on your own

C.you depend on yourself whatever happens

D.it is hard for you to prove yourself to others小题3:What can we infer about Chris Richardson?

A.He started traveling at an early age.

B.He was once shot in the arm.

C.His website inspires others a lot.

D.He used to work as a salesman.

题型:单项选择题

下列格言体现终身学习观念的是:

A.知之为知之,不知为不知,是知也

B.少而好学,如日出之阳;壮而好学,如日中之光;老而好学,如炳烛之明

C.玉不琢,不成器;人不学,不知道

D.书山有路勤为径,学海无涯苦作舟

题型:单项选择题

16世纪以后,“世界贸易的集中地逐渐转移到大西洋和西北欧……经济力量的转移预示着新大国的兴起。”引文中的“新大国”是指[ ]

A.两班牙

B.葡萄牙

C.英国

D.中国

题型:单项选择题

()是最具有主动性、能动性的因素,人的主动性积极性提高了,组织和专业技术人员会尽力争取内部资源的支持,同时组织和专业技术人员技能水平将会逐渐得到提高。

A.专业技术人员技能

B.内部机会

C.外部环境

D.激励效应

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