试题与答案

在距离雷达一定距离的一个小区域内,通过对该区域内沿雷达径向速度特征的分析,可以确定该

题型:填空题

题目:

在距离雷达一定距离的一个小区域内,通过对该区域内沿雷达径向速度特征的分析,可以确定该区域内的气流()、()和()等特征。

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:Molish反应即α-萘酚反应,阳性证明可能含糖残基,阴性证明不含糖残基,可用于区别大黄素和大黄素-8-葡萄糖苷。所以答案为D。

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题型:阅读理解

阅读理解。

     In Japan, there are many holidays and other great days. We can tell only a few here.

     The fifth birthday of a boy is a great day in the family. The boy puts on a shirt like the one his father

wears. It is an important moment in his life and means that he must now be a manly little boy like his

father. He must smile when he has pain (疼痛) or trouble. He must carry on.

     The day a girl becomes seven years old is a big day in the family. She may now wear a sash ( 腰带)

like the one her mother wears. Her friends and her mother's friends come and drink tea and eat cakes.

It means that the girl must now be a womanly little girl and help in the home.

     One of the great holidays in Japan is the Emperor's (天皇) birthday. Instead of school, there are

picnics, sports and speeches (演讲), as we have on our fourth of July in America.

      注:

     1. an important monent 重要的时刻

     2. means 意味着

     3. a manly little boy 男子汉气概的小男孩

     4. must carry on 必须坚持

1. How many holidays and great days can you find in the story?

A. Four.

B. Three.

C. Two.

2. When a boy begins to wear a shirt like the one his father wears, _________.

A. he needn't go to school

B. he isn't boy

C. he must be a boy of strong character (品格)

3. Which birthday of a girl is a big day in her family?

A. The fifth.

B. The sixth.

C. The seventh.

4. Japanese children don't go to school on _________.

A. their fifth birthdays

B. their Emperor's birthday

C. their fifth and seventh birthdays

5. From the story, we can know the writer is from _________.

A. China

B. America

C. Japan

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题型:问答题

论企业应用系统的数据持久层架构设计数据持久层(Data Persistence Layer)通常位于企业应用系统的业务逻辑层和数据源层之间,为整个项目提供一个高层、统一、安全、并发的数据持久机制,完成对各种数据进行持久化的编程工作,并为系统业务逻辑层提供服务。它能够使程序员避免手工编写访问数据源的方法,使其专注于业务逻辑的开发,并且能够在不同项目中重用本框架,这大大简化了数据的增加、删除、修改、查询功能的开发过程,同时又不丧失多层结构的天然优势,继承延续应用系统架构的可伸缩性和可扩展性。当运用关系型数据库作为数据存储机制时,在业务层与数据源间加入数据持久层,能够解决对象与关系的“阻抗不匹配”问题,将对象的状态持久化存储到关系型数据库中。请围绕“企业应用系统的数据持久层架构设计”论题,依次从以下三方面进行论述。1.概要叙述你参与分析和设计的企业应用系统开发项目以及你所担任的主要工作。2.分析在企业应用系统的数据持久层架构设计中有哪些数据访问模式,并详细阐述每种数据访问模式的主要内容。3.数据持久层架构设计的好坏决定着应用程序性能的优劣,请结合实际说明在数据持久层架构设计中需要考虑哪些问题。

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