问题 单项选择题

以下各项中不属于io包中接口的是( )。

A.DataInput

B.DataOutput

C.DataInputStream

D.ObjectInput

答案

参考答案:C

解析: DataInputStream类实现了DataInput接口,实现对字节输入的基本数据类型的判断,所以不是接口。

阅读理解

阅读理解。

     It's enough to give anyone an earache. Women spend an average of about five years on the phone during

their working lives, research has shown.

     You won't be surprised to learn that women spend 18 months longer than men on the phone-who only

chat for an average of three years.

     Both sexes make and receive almost the same number of calls - 277,000 for men and 288,000 for women.

But women spend 13,500 more hours in total on their conversations.

     More than half of those chats are work-related but people spend on average twice as long on a personal

call (10 minutes ) as on a business one.

     Despite the explosion in mobile phone ownership, most people still prefer to use landlines, the poll (民意调查) found.

     However, when people are tired of talking, the top excuse for getting a caller off the line is to say

"Someone's at the door." Other favourites include "I'm cooking" and "I need to go to the toilet".

     Eight out of ten phone users admitted not answering their phones on purpose if they did not want to speak

to the caller.

     One in three people thought calls after 10 pm were unacceptable but a quarter of those polled said they did

not mind calls up to midnight. 

     Two-thirds admitted they had people in their address books who they should ring but never got round to

doing so.

     Joseph Blass, managing director of telecom company Toucan, said, "As a nation, we love to chat on the

phone but it is quite astonishing when we look at the total number of calls we make in a lifetime."

1. According to the passage, which of the following statements is TRUE?

A. Women spend about five years talking on the phone during their lifetime.

B. Women make and receive the same number of calls as men do.

C. On average, work-related calls are only half as long as personal calls.

D. Usually a call made by a man is longer than one by a woman.

2. According to the poll, when someone on the phone says "Sorry, someone's at the door", he or

    she probably means ________.

 A. he/she is going to the toilet

B. he/she wants to stop chatting

C. he/she is too tired to talk any longer

D. he/she must go to open the door for someone

3. From the text, we know that _________.

A. calls around midnight are acceptable to some people

B. 80% of people always refuse to answer a phone call

C. people never ring the people in their address books

D. Joseph Blass was one of the people who were polled

4. What Joseph Blass says in the last paragraph shows that _______.

A. it's no wonder that we all love to chat on the phone

B. people in many countries love to chat on the phone

C. people insist on often phoning their family and friends

D. the amount of time people spend on the phone was unexpected

单项选择题

根据以下信息,回答第295题至第301题。

RST公司

比较损益表

第5年和第6年

第6年 第5年

销售额(均为赊欠) 285000美元 200000美元

商品销货成本 150000美元 120000美元

毛利 135000美元 80000美元

销售和管理费用 65000美元 36000美元

息前税前收入 70000美元 44000美元

利息费用 3000美元 3000美元

税前收入 67000美元 41000美元

所得税费用 27000美元 16000美元

净收入 40000美元 25000美元

RST公司

比较资产负债表

第5年和第6年年末

资产 第6年 第5年

短期资产现金 5000美元 4000美元

短期有价投资品 3000美元 2000美元

净应收账款 16000美元 14000美元

存货 30000美元 20000美元

短期资产合计 54000美元 40000美元

长期资产

长期投资品 11000美元 11000美元

地产、厂房和设备 80000美元 70000美元

无形资产 3000美元 4000美元

资产合计 148000美元 125000美元

负债和股东权益短期负债

应付账款 11000美元 7000美元

应计应付款项 1000美元 1000美元

短期负债合计 12000美元 8000美元

利率10%的债券,第12年到期 30000美元 30000美元

负债合计 42000美元 38000美元

股东权益

普通股2400股,面值10美元 24000美元 24000美元

留存收益 82000美元 63000美元

股东权益合计 106000美元 87000美元

负债和股东权益合计 148000美元 125000美元

RST公司第6年年末普通股的市场价格是每股100.00美元。

根据RST公司第5年和第6年的利息保障倍数比率,可以得出的结论为()。

A.RST公司的长期偿付能力有所下降 

B.RST公司的长期偿付能力有所增强 

C.RST公司的流动性有所增强 

D.RST公司的流动性有所减弱