黄某在村里有住房4间。20世纪90年代初，黄某老伴去世，黄某遂前往城里与儿子共同生活，并委托邻居杨甲照看其房屋。1998年，杨甲因病去世后，杨甲的弟弟杨乙搬进了杨甲的房屋，同时使用了黄某4间房屋的其中2间。2000年，杨乙将未使用的另外两间房屋出租给刘某居住，租期为3年，每月收取租金100元。在此期间，杨乙对全部房屋进行了整修和维护，共花费了3000元人民币。2002年，杨乙在做饭时不慎失火，将自己居住的黄某4间房屋中的1间屋烧坏，损失计1000元。2003年10月，租赁期满后，杨乙要收回刘某租住的房屋，遭到了刘某拒绝，理由是房屋本来就不是杨乙的，他无权收回。2004年12月，杨乙向人民法院起诉，要求法院判决刘某归还房屋。关于本案，下列哪些说法是正确的?
D.若黄某归来，杨乙应返还其出租房屋的收入，但应该扣除其整修房屋所花费的费用

判断题The percolation coefficient refers to the volume of water percolating into the specified pavement per unit of time at a specified initial head pressure（渗水系数指在规定的初始水头压力下，单位时间内渗入规定路面的水的体积）。

多项选择题The requirements to make a good title are: ()

单项选择题土耳其是以中国西安为起点的古老丝绸之路的必经之地。（ ）

未分类题2005年6月5日，1988年7月2l日出生的高中一年级学生小龙，因寰宇公司的公交车司机张某紧急刹车而受伤，花去若干医疗费。2006年2月小龙伤愈继续上学，写了授权委托书给其父李某，让他代理其提起诉讼。李某以正当的诉讼参加人的身份于2006年3月对寰宇公司及其司机张某提起了诉讼，要求寰宇公司和张某承担违约责任。在诉讼进行中，李某将要求被告承担违约责任改为被告承担侵权责任，要求赔偿医疗费、护理费、误工费等各项费用共2.8万元。本案被告在答辩中认为，司机紧急刹车是因为行人陈某违章过路引起，责任应当由陈某承担，因此要求追加陈某作为无独立请求权的第三人参加诉讼。请回答下列各题：本案参加诉讼的人在诉讼中的正确地．位是：A.小龙是原告，李某是原告的委托代理人，寰宇公司和张某是被告B.小龙是原告，李某是原告的委托代理人，寰宇公司是被告C.小龙是原告，李某是原告的法定代理人，寰宇公司和张某是被告D.小龙是原告，李某是原告的法定代理人，寰宇公司是被告

多项选择题设备租赁与购置方案的经济必选是互斥方案的优选问题，一般寿命相同时采用（ ）。 A、现值法 B、净现值法 C、年值法 D、财务净现值法

未分类题A这个B风景优美的世外桃源C并不D人所知。

未分类题在敏感性分析中，为了找出关键的敏感性因素，通常多进行< )。D.只进行多因素敏感性分析

未分类题For most of us, work is the central, dominating fact of lifE.We spend more than half our conscious hours at work, preparing for work, traveling to and from work. What we do there largely determines our standard of living and to a considerable extent the status we are accorded by our fellow citizens as Well. It is sometimes said that because leisure has become more important the indignities and injustices of work can be pushed into a corner; that because work is intolerable, the people who do it should compensate for its boredoms and frustrations by concentrating their hopes on the other part of their lives. I reject that as a counsel of despair. For the foreseeable future the material and psychological rewards which work can provide will continue to play A.vital part in determining the satisfaction that life can offer. Yet only a small minority can control the pace at which they work or the conditions in which their work is done; only for a small minority does work offer scope for creativity, imagination, or initiativE.Inequality at work and in work still is one of the cruelest and most glaring forms of inequality in our society. We can not hope to solve the more obvious problems of industrial life, many of which arise directly or indirectly from the inequality at work. Still less can we hope to create a decent and humane society.The most glaring inequality is that between managers and the rest. For most managers, work is an opportunity and a challengE.Their jobs engage their interest and allow them to develop their abilities. They are able to exercise responsibility; they have a considerable degree of control over their own and the others' working lives. Most important of all, they have the opportunity to initiatE.By contrast, for most manual workers, work is a boring, monotonous, even painful experiencE.They spend all their working lives in conditions which would be regarded as intolerable for themselves by those who take the decisions which let such conditions continuE.The majority have little control over their work; it provides them with no opportunity for personal development. Often production is so designed that workers are simple part of the technology. In offices, many jobs are so routine that workers justifiably feel themselves to be mere cogs in the bureaucratic machinE.As a direct consequence of their work experience, many workers feel alienated from their work and their firm, whether it is in public or in private ownership.It's true about work thatA.whether you are happy in life largely depends on whether your work is rewarding.B.leisure becomes more and more important than work.C.people should try to avoid the intolerable unfairness of work.D.concentrating on your work is a counsel when you are in despair.

未分类题Manual workers' working conditions generally remain bad becauseA.the workers are unwilling to change them.B.no one can decide what to do about them.C.managers do not want to change them.D.office workers want to protect their position.

未分类题设有关系模式：student (sno，sname，age，dept)，现利用命令： CREATE VIEW stu AS SELECT*FROM student WHERE dept='cs'WITH CHECK OPTION 创建了一个视图。则以下SQL命令中能正确执行的是( )。A.UPDATE stu SET dept='maths'B.UPDATE stu SET dept='maths' WHERE age＞=20C.INSERT INTO stu VALUES('2004001','John',30,'cs')D.INSERT INTO stu VALUES('2004001','John',50,'maths')