关于引起心脏传导阻滞的病因,下列各项中错误的是A.洋地黄B.利多卡因C.心肌炎D.麻

题型:单项选择题

问题:

关于引起心脏传导阻滞的病因,下列各项中错误的是

A.洋地黄
B.利多卡因
C.心肌炎
D.麻黄碱
E.冠心病

考点:内科主治医师心内科专业知识心内科主治医师专业知识
题型:单项选择题

一定温度下,向饱和NaOH溶液中投入一小块金属钠,充分反应后恢复到原来温度。下列叙述中,不合理的是[ ]

A.NaOH溶液浓度增大,并放出H2

B.溶液中NaOH的质量分数不变,有H2放出

C.溶液的质量减小,有H2放出

D.钠浮于液面,到处游动,发出嘶嘶的响声

题型:单项选择题

Three astronauts returned to Earth safely on Wednesday after a successful 15-day mission (任务), marking another step forward towards the country’s goal of building a manned space station by 2020.

Zhang Youxia, commander-in-chief of China’s manned space program, said the Shenzhou X mission was a “complete success”.

The Shenzhou X landed safely in north China’s Inner Mongolia Autonomous Region at about 8:07 a.m. on June 26, 2013. All three astronauts were in good physical condition.

Nie Haisheng, commander of the Shenzhou X crew and a second-time space traveler, was the first to get out of the bowl-like module(舱), followed by Wang Yaping, the only female astronaut of the mission, and Zhang Xiaoguang. During a brief welcoming ceremony held at the landing area, the astronauts waved happily to a crowd consisting of officers, the search and recovery team, and health personnel.

“It feels really good to be back home,” said astronaut Nie Haisheng.

“We are dreamers, and we have now realized our dream,” said Zhang Xiaoguang. “Our space dream knows no limit, and our hard work will never stop,” he said.

Compared with its previous mission Shenzhou IX last year, the Shenzhou X is no longer experimental but considered an applicable shuttle(航天飞机)system for sending astronauts and supplies to orbiting modules. The mission aims to further test technologies designed for docking(对接)and supporting astronauts’ stay in space, as well as to use new technologies related to the construction of a space station.

In its 15-day journey in space, Shenzhou X docked with the orbiting space lab Tiangong-1 twice, once through automatic operation and the other manual(手控的).The Tiangong-1 space lab has been in orbit for more than 600 days. It’s designed to work for two years. The module is considered the first step in building a permanent space station in the future. And the astronauts spent 12 days in Tiangong-1, where they conducted space medical experiments, technical tests and gave a science lesson to students on Earth on June 19 about basic physics principles. The lecture was the second video class sent from space, with US astronaut Barbara Morgan’s 25-minute class being the first in 2007.

China is the third country after the United States and Russia to acquire the technologies and skills necessary for space rendezvous(交会)and docking procedures, as well as supply manpower and material for an orbiting module via different docking methods.

Previous docking procedures conducted between Shenzhou-type spacecraft and the orbiting space lab included two automated dockings by the unmanned Shenzhou-8 in 2011 and both an automated and manual docking by the manned Shenzhou-9 in 2012.

Since its first manned space space mission in 2003, China has sent ten astronauts and six spacecrafts into the space.

小题1:According to the passage, the Shenzhou X ________.

A.was sent into space on June 11, 2013

B.is still an experimental shuttle system

C.sent many supplies to the manned space station

D.returned to Earth safely on the afternoon of June 26小题2:China sent the Shenzhou X into space to ________.

A.learn how to make use of a manned space station

B.prove the importance of the manned space program

C.experiment on how to make astronauts stay in space safely

D.test new technologies for the construction of a space station小题3: We can learn from the passage that ________.

A.Nie Haisheng is the only male astronaut of the mission

B.The Tiangong-1 space lab was founded in 2012

C.China is the second country to give a space class

D.the Tiangong-1 was mainly designed to serve Shenzhou X小题4:What is the best title for the passage?

A.China Prepares for Next Manned Mission

B.Shenzhou X Spacecraft Mission Is a Success

C.China’s Shenzhou X Is Now in Space

D.Astronauts of Shenzhou X Mission Are Meeting Media

题型:单项选择题

近年来,地沟油事件让人们“谈油色变”。阅读材料,回答问题。

材料一:近日公安部统一指挥破获了一起特大利用地沟油制售假食用油的系列案件。摧毁了涉及14 个省份的“地沟油”犯罪网络。

(1)生产、销售伪装成食用油的地沟油,违背公民基本道德规范的哪些内容?

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材料二:地沟油本身如果不加回收,会流入江河造成环境污染,但回收处理所需费用又相当惊人。日本政府将清理地沟油的环保费用用于回收和提炼地沟油。政府购买地沟油的价格高于无良厂商所能承受的价格。厂商们无利可图自然放弃收购。

上图:日本餐饮以及食品加工行业所产生的废弃食用油的再生循环图。

(2)为了让“邪油”走上正途,日本的做法对我们有什么借鉴?

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材料三:“地沟油在8 摄氏度即凝结。将自家购买的食用油放进8 ℃左右的冰箱,如凝结,即为地沟油。”这样一条微博成了不少网友转发的热点。这个简单易操作方法竟出自于上海的中学生汪亦乐为主的小团队,他们的发明因此在第五届北京发明创新大赛中获得银奖。“这些都是中学物理的知识,只是之前一直没有人实践过。让学生动手搞研究,把书本知识用于实践,对学生有很大益处。”  指导他们的黄老师说,“这些孩子的特点就是敢想、敢钻、不怕失败。”

(3 )黄老师对汪亦乐团队的评价,对你有什么启发?

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题型:单项选择题

锅炉负荷变化时,汽包水位变化的原因是什么?

题型:单项选择题

个灯泡的额定值为“220V、100W”,若将它接到110V的电源下使用,则实际消耗的功率为()W。

A、25

B、50

C、100

D、200

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