[单选题]人员搜救应贯穿于灭火救援全过程,应按照( )的顺序,遵循先易后难的原则,分工部署实施搜救。
A.着火层上层—着火层—着火层下层
B.着火层—着火层上层—着火层下层
C.着火层下层—着火层上层—着火层
D.着火层上层—着火层下层—着火层
[填空题]
Walking—like swimming, bicycling and running—is an aerobic
exercise, {{U}} (31) {{/U}}builds the capacity for energy output and
physical endurance by increasing the supply of oxygen to skin and muscles. Such
exercises may be a primary factor in the{{U}} (32) {{/U}}of heart and
circulatory disease.
As probably the least strenuous, safest
aerobic activity, walking is the{{U}} (33) {{/U}}acceptable exercise for
the largest number of people. Walking{{U}} (34) {{/U}}comfortable speed
improves the efficiency of the cardiorespiratory system{{U}} (35)
{{/U}}stimulating the lungs and heart, but at a more gradual rate{{U}}
(36) {{/U}}most other forms of exercise.
In one test,
a group of men 40 to 57 years of age, {{U}} (37) {{/U}}at a fast pace for
40 minutes four days a week, showed improvement{{U}} (38) {{/U}}to men
the same age on a 30 minute, three-day-a-week jogging program in the same
period. Their resting heart rate and bod
[判断题]根据《安全事故调查规程》， 检查评估报告及有关资料应留档，与事故报告一并保存、管理。
A.正确
B.错误
[单选题]某大学拟发文处理在期末考试作弊的学生，应用()行文。
A.通报
B.通知
C.通告
D.决定
[判断题]列车运行图是编制列车编组计划的依据。
A.正确
B.错误
[多选题]《电力安全工作规程 配电部分（试行）》适用于国家电网公司系统各单位所管理的运用中的（）（）及相关场所。
A.配电线路、设备
B.变电站内配电设备
C.用户配电设备
D.发电厂内低压配电设备
[判断题]机车调度规则规定：普速机车调度台原则上每个台管辖100-150台机车为宜，具体设置和每个台管辖机车台数由铁路局集团公司确定。
A.正确
B.错误
[单选题]在木结构或砖木结构临时职工食堂的炉灶处进行施工作业属()级动火区域。
A. 三
B. 一
C. 二
[单选题]速差自控器的检查项目,标准周期为()年。
A.半
B.一
C.两
[判断题]依据《中国南方电网有限责任公司电力安全工作规程》，在进行高处作业时，除有关人员外，不准他人在工作地点的垂直下方及坠物可能落到的地方通行或逗留，防止落物伤人。
A.正确
B.错误
[多项选择]物流系统的目标，包括（）
A. 服务目标
B. 快捷目标
C. 节约目标
D. 规模优化目标
[单选题]一般把微启式安全阀用于( )。
A.蒸汽管道
B.过热器
C.省煤器
D.锅筒
[单选题]生产调度接报刚性分段绝缘器故障后应通知以下哪些人员（）
A.行调
B.接触网工程师
C.检修调度
D.检调
[单项选择]患儿1岁，生后4月发现智力发育落后，尿有鼠尿臭味，毛发及皮肤颜色浅，7月开始出现癫痫小发作，实验室检查确诊为典型的PKU，给予低苯丙氨酸饮食，每天允许苯丙氨酸的摄入量为
A. 5～10mg/kg
B. 10～20mg/kg
C. 20～30mg/kg
D. 30～50mg/kg
E. 50～70mg/kg
[简答题]BGP协议中，ORIGIN属性的作用是什么？常见的有几种，分别是如何生成的？
[单项选择]林女士，30岁。近2年来常感午后低热、盗汗，伴食欲减退、消瘦、乏力，近1周出现高热、痰量增多、伴咯血及右侧胸痛。痰菌检查结果为结核杆菌阳性。护理诊断与病情不符的一项是（）
A. 知识缺乏
B. 体温过高
C. 有窒息的危险
D. 心排出量减少
E. 营养失调：低于机体需要量
[单选题]一座无吊车的厂房，屋架间距为6m，屋架柔性系杆的断面应选择下列中的哪一种？
A.∠56X5，ix= 1. 72cm，imin= 1. 10cm
B.∠63X5，ix =1. 94cm，imin= 1. 25cm
C.∠70X5，ix= 2.16cm，imin= 1. 39cm
D.∠75X5，ix=2.32cm，imin= 1. 50cm
[填空题]影响软件维护的因素一般包括软件系统的规模、 【 】 和结构。
[单选题]患者女性，41岁。全麻下行甲状腺切除术，术中取什么卧位
A.水平仰卧位
B.颈仰卧位
C.半坐卧位
D.截石位
E.侧卧位
[单选题]使用竹梯时,梯子与地面的夹角以( )°为宜。
A.50
B.60
C.70
[不定项选择题]共用题干
Black Holes
1 Black holes can be best described as a sort of vacuum,sucking up everything in space.Scientists
have discovered that black holes come from an explosion of huge stars.Stars that are near death can no longer
burn due to loss of fuel , and because its temperature can no longer control the gravitational（重力的）force,
hydrogen ends up putting pressure onto the star's surface until it suddenly explodes then collapses.
2 Black holes come from stars ihat are made of hydrogen,other gases and a few metals.When these
explode it can turn into a stellar-mass（恒星质量) black hole , which can only occur if the star is large enough
(should be bigger than the sun)for the explosion to break it into pieces,and the gravity starts to compact
every piece into the tiniest particle.Try to see and compare:if a star that's ten times the size of the sun ends
up being a black hole that's no longer than 70 kilometers,then the Earth would become a black hole that'S
only a fraction of an inch!
3 Objects that get sucked in a black hole will always remain there,never to break free.i1it remember
that black holes can only gobble up（吞噬）objects within a specific distance to it.It's possible for a large
star near the sun to become a black hole,but the sun will continue to stay in place.Orbits（轨道）do not
change because the newly formed black hole contains exactly the same amount of mass as when it was a star,
only this time its mass is totally contracted that it can end up as no bigger than a state.
4 Sofar,astronomers have figured out that black holes exist because of Albert Einstcin's theory of
relativity.In the end,through numerous studies,they have discovered that black holes truly exist.Since black
holes trap light and do not give off light,it is nearly impossible to detect black holes via a telescope.But
astronomers continue to study galaxies（银河系）, space and the solar system to understand how black holes
might evolve.It is possible that black holes can exist for millions of years,and later contribute to a bigger
process in galaxies,which can eventually lead to creation of new entities（实体）.Scientists also credit black
holes as helpful in learning how galaxies began to form.
Paragraph 3 _________
A.What Happens to the Objects Around a Black Hole?
B.Is There Proof That Black Holes Really Exist?
C.How Were Black Holes Named?
D.What Are Different Types of Black Holes?
E.What Are Black Holes Made of?
F.How Are Black Holes Formed?
[判断题]以下行为是否正确：有限空间内气体含量未经检测或检测不合格的不干。（ ）
A.正确
B.错误
[多选题]规定的安全电压为（ ）
A.36V
B.24V
C.12V
D.50V
