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问题 单项选择题

百日咳的临床特征是（）

A.阵发性痉挛性咳嗽，咳末伴有较长的鸡鸣样吸气性吼声，最后倾吐痰沫

B.连声干咳，咳声高亢，无痰

C.阵发性咳嗽，咳声重浊，痰液粘稠

D.呛咳不已，咽痛无痰

E.喉间哮鸣气促，呼气延长

答案

参考答案：A

解析：百日咳又名"顿嗽"、"顿呛"，临床以阵发痉咳和鸡鸣样吼声为特征。

阅读理解

阅读理解。

     Lin Meng has a nice bedroom. It's big and comfortable (舒适的). The walls of it are white and the

windows are yellow. There's small bed on the left side of the bedroom. Two pairs of sport shoes are

under it. I'm in front of the bed, there is a table. And there's a computer, a lamp and some books on the

table. Near the table there is a chair. Look! What's under the chair? Oh. It's a football. Lin Meng often

 plays with it after school in the afternoon. There are two pictures on the wall. One is a football star,

Ronaldo, and the other is Jacky Chou, a famous singer. Lin Meng cleans his bedroom every day.

He likes it very much.

1. How many things are mentioned (提及) in Lin Meng's bedroom? [ ]

A. 9

B. 10

C. 11

D. 12

2. What color are the walls and windows?[ ]

A. Black and white.

B. White and yellow. 

C. Yellow and white.

D. White and green.

3. Does Lin Meng clean his bedroom every day?[ ]

A. Yes, he does.

B. No, he doesn't.

C. Yes, he is.

D. No, he isn't.

4. Lin Meng likes _____ very much. [ ]

A. basketball and football

B. sports and singing.

C. English and math.

D. singing and dancing.

5. When does Lin Meng play football? [ ]

A. On Sundays.

B. After class.

C. In the afternoon.

D. In the morning.

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问答题

某企业目前有两个备选项目，相关资料如下：
资料1：已知甲投资项目建设期投入全部原始投资，其累计各年税后净现金流量如表所示：

时间(年) 0 1 2 3 4 5 6 7 8 9 10
NCF(万元)
累计NCF -800 -1400 -1500 -1200 -800 -400 -200 300 800 1400 2100
折现系数
(I=10%)		 1 0.9091 0.8264 0.7513 0.6830 0.6209 0.5645 0.5132 0.4665 0.4241 0.3855
折现的NCF
资料2：乙项目需要在建设起点一次投入固定资产投资200万元，无形资产投资25万元。该项目建设期2年，经营期5年，到期残值收入8万元，无形资产自投产年份起分5年摊销完毕。投产第一年预计流动资产需用额60万元，流动负债需用额40万元；投产第二年预计流动资产需用额90万元，流动负债需用额30万元。该项目投产后，预计每年营业收入210万元，每年预计外购原材料、燃料和动力费50万元，工资福利费20万元，其他费用10万元。企业适用的增值税税率为17%，城建税税率7%，教育费附加率3%。该企业不交纳营业税和消费税。
资料3：该企业按直线法折旧，全部流动资金于终结点一次回收，所得税税率25%，设定折现率10%。
要求：

若甲乙两方案彼此相互排斥，要求利用年等额净回收额法选优。
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