试题与答案

在房地产投资分析中,若不能确定各风险因素未来发生的概率,则盈亏平衡分析就无法进行。(

题型:判断题

题目:

在房地产投资分析中,若不能确定各风险因素未来发生的概率,则盈亏平衡分析就无法进行。( )

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:(1)选项A:发明人、设计人是对已经完成的发明创造或者外观设计的实质性特点作出创造性贡献的人。在完成发明创造、设计过程中,只负责组织工作的人、为物质技术条件的利用提供方便的人或者从事...

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题型:阅读理解

阅读理解。

     Pet owners are being encouraged to take their animals to work , a move scientists say can be good

for productivity , workplace morale (士气), and the well-being of animals .

     A study found that 25% of Australian women would like to keep an office pet . Sue Chaseling of

Petcare Information Service said the practice of keeping office pets was good both for the people and

the pets . "On the pets' side , they are not left on their own and won't feel lonely and unhappy," she said .

A study of major US companies showed that 73% found office pets beneficial (有益的) , while 27%

experienced a drop in absenteeism (缺勤).

   Xarni Riggs has two cats walking around her Global Hair Salon in Paddington . "My customers love

them. They are their favorites ," she said . "They are not troublesome . They know when to go and have

a sleep in the sun ."

   Little black BJ has spent nearly all his two years "working" at Punch Gallery in Balmain . Owner Iain

Powell said he had had cats at the gallery for 15 years . "BJ often lies in the shop window and people

walking past tap on the glass ," he said .

   Ms Chaseling said cats were popular in service industries because they enabled a point of conversation . But she said owners had to make sure both their co-workers and the cats were comfortable .

1. The percentage of American companies that are in favor of keeping office pets  is ______

A. 73%    

B. 27%    

C. 25%    

D. 15%

2. We know from the text that "BJ"       

A. works in the Global Hair Salon    

B. often greets the passers-by 

C. likes to sleep in the sun          

D. is a two-year-old cat

3. The best title for this text would be  ____.

A. Pets Help Attract Customers      

B. Your Favorite Office Pets

C. Pets Join the Workforce         

D. Busy Life for Pets

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题型:实验题

某同学设计了如图所示的装置来探究加速度与力的关系。弹簧秤固定在一合适的木板上,桌面的右边缘固定一支表面光滑的铅笔以代替定滑轮,细绳的两端分别与弹簧秤的挂钩和矿泉水瓶连接。在桌面上画出两条平行线MN、PQ,并测出间距d。开始时将木板置于MN处,现缓慢向瓶中加水,直到木板刚刚开始运动为止,记下弹簧秤的示数F0,以此表示滑动摩擦力的大小。再将木板放回原处并按住,继续向瓶中加水后,记下弹簧秤的示数F1,然后释放木板,并用秒表记下木板运动到PQ处的时间t。

(1)木板的加速度可以用d、t表示为a=____________。

(2)改变瓶中水的质量重复实验,确定加速度a与弹簧秤示数F1的关系。下列图象能表示该同学实验结果的是____________。

(3)用加水的方法改变拉力的大小与挂钩码的方法相比,它的优点是____________。

A.可以改变滑动摩擦力的大小

B.可以更方便地获取多组实验数据

C.可以比较精确地测出摩擦力的大小

D.可以获得更大的加速度以提高实验精度

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