皮皮学，免费搜题
登录
搜题
【单选题】
图示一细棒由和木质两段构成,两段长度相等,视为均质的,其总质量为M。此棒对通过B、C的三轴z1、z2、z3的转动惯量分别用Jz1、Jz2、Jz3表示,则
A.
Jz1>Jz2>Jz3;
B.
Jz2> Jz1 >Jz3;
C.
Jz1=Jz2>Jz3;
D.
Jz1=Jz3+M(L/2) 2 。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Although it is not generally accepted, your family provides the best prediction of your future wealth.
B.
You can achieve great future wealth in spite of the family in which you may have been born.
C.
It is not true that your family will restrict the acquisition of your future wealth and level of social status.
D.
Social myths are contrary to the facts about the future wealth and social status of your family.
查看完整题目与答案
【单选题】2010年11月1日零点的第六次全国人口普查是( )
A.
典型调查
B.
重点调查
C.
一次性调查
D.
经常性调查
查看完整题目与答案
【单选题】按物流的功能对物流成本进行分类，其中（）成本主要包括建造、购买或租赁仓库设施设备的成本和各类仓储作业带来的成本
A.
仓储
B.
运输
C.
流通加工
D.
包装
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Properties that are classified as intensive identify the type of substance and the extent of it present in the surrounding matter.
B.
The quantity of a substance influences its extensive properties, but the characteristics of the substance define the intensive properties.
C.
Where the intensive and extensive properties are found in substances is important in identifying their characteristics.
D.
Both intensive and extensive properties tend to have quantitative rather than qualitative characteristics present.
查看完整题目与答案
【多选题】主要是二次研究证据的来源有
A.
循证医学杂志
B.
DynaMed
C.
Cochrane Library
D.
UpToDate
E.
MD Consult
F.
中国生物医学文献数据库
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Among the laws to protect Britain from competition in the textile industry was a ban on exporting Arkwright equipment and on emigration of former employees.
B.
Former employees of Arkwright could not leave the country because they might provide information about the company to competing factories.
C.
The reason that Britain passed laws to prevent emigration was to keep employees in the textile mills from leaving their jobs to work in other countries.
D.
Parliament passed laws to ensure that the price of textiles was kept high in spite of competition from the former British colonies who were exporting cloth.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
It is the hydrologic cycle that causes water to evaporate from plants, soil, and bodies of water inland as well as from the oceans.
B.
Solar energy is the source of power for the hydrologic cycle, which begins by evaporating water from plants, soil, oceans, and freshwater sources.
C.
The evaporation of water from the oceans, freshwater sources, plants, and soils is the natural process, which we call the hydrologic cycle.
D.
Energy from the sun and the hydrologic cycle are power sources for plants that require water from the oceans and freshwater sources.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
New businesses and industries were created by the federal government to keep the prices of manufactured goods low.
B.
The lower price of manufacturing attracted many foreign businesses and new industries to the area.
C.
Federal taxes on cheaper imported goods were responsible for protecting domestic industries and supporting new businesses.
D.
The federal tax laws made it difficult for manufacturers to sell their goods to foreign markets.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Mesopotamian and Egyptian civilizations exhibit the majority of the characteristics identified by historians.
B.
The characteristics that historians have identified are not found in the Egyptian and Mesopotamian cultures.
C.
Civilizations in Mesopotamia and Egypt were identified by historians who were studying the characteristics of early cultures.
D.
The identification of most historical civilizations includes either Egypt or Mesopotamia on the list.
查看完整题目与答案
【单选题】When I worked as a bank clerk, I had the opportunity to meet a rich ______ of people: students, soldiers and factory workers.
A.
diversity
B.
kind
C.
range
D.
variety
查看完整题目与答案
相关题目：
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Although it is not generally accepted, your family provides the best prediction of your future wealth.
B.
You can achieve great future wealth in spite of the family in which you may have been born.
C.
It is not true that your family will restrict the acquisition of your future wealth and level of social status.
D.
Social myths are contrary to the facts about the future wealth and social status of your family.
查看完整题目与答案
【单选题】2010年11月1日零点的第六次全国人口普查是( )
A.
典型调查
B.
重点调查
C.
一次性调查
D.
经常性调查
查看完整题目与答案
【单选题】按物流的功能对物流成本进行分类，其中（）成本主要包括建造、购买或租赁仓库设施设备的成本和各类仓储作业带来的成本
A.
仓储
B.
运输
C.
流通加工
D.
包装
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Properties that are classified as intensive identify the type of substance and the extent of it present in the surrounding matter.
B.
The quantity of a substance influences its extensive properties, but the characteristics of the substance define the intensive properties.
C.
Where the intensive and extensive properties are found in substances is important in identifying their characteristics.
D.
Both intensive and extensive properties tend to have quantitative rather than qualitative characteristics present.
查看完整题目与答案
【多选题】主要是二次研究证据的来源有
A.
循证医学杂志
B.
DynaMed
C.
Cochrane Library
D.
UpToDate
E.
MD Consult
F.
中国生物医学文献数据库
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Among the laws to protect Britain from competition in the textile industry was a ban on exporting Arkwright equipment and on emigration of former employees.
B.
Former employees of Arkwright could not leave the country because they might provide information about the company to competing factories.
C.
The reason that Britain passed laws to prevent emigration was to keep employees in the textile mills from leaving their jobs to work in other countries.
D.
Parliament passed laws to ensure that the price of textiles was kept high in spite of competition from the former British colonies who were exporting cloth.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
It is the hydrologic cycle that causes water to evaporate from plants, soil, and bodies of water inland as well as from the oceans.
B.
Solar energy is the source of power for the hydrologic cycle, which begins by evaporating water from plants, soil, oceans, and freshwater sources.
C.
The evaporation of water from the oceans, freshwater sources, plants, and soils is the natural process, which we call the hydrologic cycle.
D.
Energy from the sun and the hydrologic cycle are power sources for plants that require water from the oceans and freshwater sources.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
New businesses and industries were created by the federal government to keep the prices of manufactured goods low.
B.
The lower price of manufacturing attracted many foreign businesses and new industries to the area.
C.
Federal taxes on cheaper imported goods were responsible for protecting domestic industries and supporting new businesses.
D.
The federal tax laws made it difficult for manufacturers to sell their goods to foreign markets.
查看完整题目与答案
【单选题】Which of the sentences below best expresses the information in the highlighted statement in the passage? The other choices change the meaning or leave out important information.
A.
Mesopotamian and Egyptian civilizations exhibit the majority of the characteristics identified by historians.
B.
The characteristics that historians have identified are not found in the Egyptian and Mesopotamian cultures.
C.
Civilizations in Mesopotamia and Egypt were identified by historians who were studying the characteristics of early cultures.
D.
The identification of most historical civilizations includes either Egypt or Mesopotamia on the list.
查看完整题目与答案
【单选题】When I worked as a bank clerk, I had the opportunity to meet a rich ______ of people: students, soldiers and factory workers.
A.
diversity
B.
kind
C.
range
D.
variety
查看完整题目与答案