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According to the United States government, people are classified as homeless if they have no place to stay and no expectation of finding a place for the next thirty days. Although technically accurate, that is an impersonal assessment of an enormous and very human problem. The homeless population represents all of us Americans. It includes men and women, the elderly, children, and infants. Its members are from all ethnic groups. What they have in common is poverty. Currently in the U.S., thirty-nine million people live in poverty. When money is really tight, paying the rent or buying food often becomes a choice. Government assistance in the form of food stamps does help but, as one homeless man explains, you can’t pay the rent with food stamps. With no money for rent, the streets and homeless shelters become the alternative. Although men make up the largest group within the homeless population, homeless women with children are rapidly joining them. In fact, one quarter of the homeless people in the U.S. are teenagers and young children. People may become homeless for numerous reasons. However, there are certain factors that many of these individuals have in common. They include a lack of adequate education and job skills. A majority of the teenagers and adults have n ot completed high school. The abuse of alcohol and drugs is also a common factor. One third of the adult homeless population abuses alcohol, while one quarter of the same group uses drugs. Some members of this population suffer mental health problems. Within the past several years many institutions for the mentally ill have been closed and their patients sent “home”. Unfortunately, a number of those people have no home to go to and they are unable to adequately look after themselves. Job loss in today’s economy has also become a real factor in the loss of people’s homes. The breakup of families through abandonment and divorce is also contributing factors, particularly when there are children involved. The parent who is left to care for the kids with inadequate income may be forced to depend on the homeless shelters to put a roof over their heads. 小题1:The writer thinks that the U.S. government’s d efinition for the homeless shows _________. A.an insincere attitude toward the homeless B.an unbearable attitude toward the homeless C.an uncivilized attitude toward the homeless D.an unsympathetic attitude toward the homeless 小题2:The U.S. government helps the homeless by _________. A.giving them homeless allowance B.giving them food stamps C.finding jobs for them D.finding residence (a place to live) for them 小题3:People become homeless for all the following reasons EXCEPT _________. A.the lack of adequate education B.the abuse of alcohol and drugs C.the closure of institutions for the mentally ill D.the poor performance of economy 小题4:The breakup of families is likely to lead to homelessness because a parent with kids may _________. A.lose his or her job in today’s economy B.be unable to look after the kids C.not have enough income D.find residence at a homeless shelter
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【简答题】与下面查询设计视图所示的查询结果等价的 SQL 查询语句是 Select , 姓名,课程编号,成绩 From 学生,选课成绩 Where
【简答题】写出下列梯形图在 CX-P 中输入过程的步骤。
【单选题】设S为学生关系,SC为学生选课关系,SNO为学生号,CNO为课程号,执行下面SQL语句的查询结果是 SELECT S.*FROM S,SCWHERE S.SNO=S
A.
选出选修C2课程的学生信息
B.
选出选修C2课程的学生名
C.
选出S中学生号与SC中学生号相等的信息
D.
选出S和SC中的一个关系
【简答题】与下面查询设计视图所示的查询结果等价的 SQL 查询语句是 Select 课程编号 , 课程名称 , 学分 From 课程 Where
【简答题】在实验室中常用“水浴器”来保持物体处于恒温状态。如图所示,水浴器通过温度选择器来设定所需要的水温。通过电子线路实现对加热器的控制。通过温度传感器检测水温,并以电子信号形式传递给控制端,控制装置将这个信号与来自温度选择器的信号进行比较,从而使水浴器内箱保持恒温。 根据控制系统原理图及其描述,完成控制系统方框图。
【单选题】下列SQL查询语句中,与下面查询设计视图所示的查询结果等价的是( )
A.
Select姓名,性别,所属院系,简历From tStud Where性别一”女”And所属院系In(”03”,”04”)
B.
Select姓名,简历From tStud Where性别一”女”And所属院系In(”03”,”04”)
C.
Select姓名,性别,所属院系,简历From tStud Where性别一”女”And所属院系一”03”OR所属院系一”04”
D.
Select姓名,简历From tStud Where性别一”女”And所属院系=”03”OR所属院系一“04”
【单选题】发动机电子控制系统尽管类型不少、品种繁多,但它们都具有相同的()。
A.
控制原则
B.
制约原则
C.
检测原理
【判断题】平均分配,不能有收入差距。
A.
正确
B.
错误
【简答题】与下面查询设计视图所示的查询结果等价的 SQL 查询语句是 Select 姓名, 课程名称, From 课程成绩 [ 平时成绩]*0.2+[考试成绩]*0.8
【简答题】电子控制系统检测原则
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