关于声现象下列说法不正确的是( ) A.真空不能传声是通过实验与推理的方法获得的

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问题:

关于声现象下列说法不正确的是(  )

A.真空不能传声是通过实验与推理的方法获得的

B.发出较强声音的喇叭能使它前面的烛焰“跳舞”,说明声波能传递能量

C.课堂上听到老师的讲话声,说明声音可以在空气中传播

D.声音在不同介质中传播速度相同

考点:声音的传播声速声与能量
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残疾的定义包括()。

A.由于各种躯体、身心、精神疾病或损伤以及先天性异常所造成的功能障碍状态,显著影响身体活动、ADL、工作、学习和社交活动

B.由于各种躯体、身心、精神疾病或损伤以及先天性异常所造成的长期、持续、永久的功能障碍状态,显著影响身体活动、ADL、工作、学习和社交活动

C.由于各种躯体、身心、精神疾病或损伤以及先天性异常所造成的功能障碍状态显著影响ADL

D.由于各种躯体、身心、精神疾病或损伤以及先天性异常所造成的长期、持续、永久的功能障碍状态,无论这些功能障碍是否身体活动、ADL、工作、学习和社交活动

E.指身体功能障碍

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This year’s World Food Prize will honor two leaders of hunger-fighting groups based  in the United States. The winners are David Beckmann of Bread for the World and Jo Luck of Heifer International. They will share the prize of 250,000 dollars. The World Food Prize usually goes to researchers or top policy officials. This is the first time it will recognize the work of nongovernmental groups.

Heifer International provides donated animals and training to farmers in 50 countries. Jo Luck remains president until next year. Under her leadership, the group’s budget grew from less than 10,000,000 dollars to more than 130,000,000 dollars. Jo Luck, “People pass on their gifts of not just animals but also gifts of training and leadership. We have seen cases where we have been gone 5 and 10 years and we go back and they have developed roads and built schools, and they have other communities receiving the animals and the training. You just give them those resources and that training and opportunity, and you cannot hold them back.” She told the story of a woman from a poor village in Zimbabwe. A family member helped send her to school in the United States with earnings from a donated milk goat. She received a doctoral degree. Jo Luck, “That is what a goat did. That is one example. The animal is only the catalyst(催化剂). That is the beginning of many other things that follow.”

David Beckmann became president of Bread for the World in 1991. He is an economist and a Christian clergyman(牧师). Bread for the World organizes people from religious and non-religious groups to write, call and visit members of Congress(国会). The purpose is to support measures to improve the lives of the poor. David Beckmann points to big increase in American development assistance. He said, “I think that would not have happened without the support of hundreds of thousands of people and churches that are part of Bread for the World and that keep the pressure on their members of Congress.” The prize committee also credited his efforts with helping to increase aid to needy families in the United States.

小题1:The World Food Prize honors ________.

A.people who fight against hunger

B.researchers or top policy officials

C.people from nongovernmental groups

D.people who have advanced human development小题2:Why does Jo Luck receive the prize?

A.Under her leadership, people develop roads and build schools.

B.She has served Heifer International for almost 20 years.

C.Under her leadership, Heifer International helps farmers in 50 countries.

D.She makes the group’s budget grow to more than 130 million.小题3:What has David Beckmann done to deserve the prize?

A.He has trained farmers in 50 countries.

B.He has made a great contribution to science.

C.He has led Bread for the World for more than 20 years.

D.He has aimed to support measures to improve the lives of the poor.

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甲国发射的气象卫星与乙国发射的遥感卫星相撞,造成遥感卫星坠落,遥感卫星的碎片又在丙国境内与正在飞行的丙国民航飞机相撞并使其坠落。同时坠落的卫星碎片又造成了丙国地面人员及财产的损害。甲、乙、丙三国均为1972年《空间物体造成损害的国际责任公约》(以下简称1972年《责任公约》)及其他相关公约的参加国。依外空法的有关制度,下列哪项表述是正确的?()

A.对于两个卫星之间的相撞,甲乙两国应承担绝对责任

B.甲乙两国对卫星碎片带F来的丙国飞机的损害应承担推定过失责任

C.对于卫星碎片造成的丙国飞机的坠落,甲乙两国应承担绝对责任

D.甲乙两国对卫星碎片造成的丙国人员及财产的损害应承担过失责任

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甲某是某建筑队的电焊工,在一次建筑物装修的施工中,没有按照规定清除电焊作业下发堆放的大量木板和棉织物,就进行电焊作业。结果炙热的电焊渣掉落到下方的物品上,引起火灾,造成大楼被烧毁,直接经济损失1000万元,同时还导致20人被大火烧死。甲某的行为构成( )。

A.失火罪和过失致人死亡罪
B.失火罪
C.重大责任事故罪和过失致人死亡罪
D.重大责任事故罪

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什么是级配碎石路面?

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