未知题型

在考生文件夹下完成如下简单应用： 1．用SQL语句完成下列操作：列出“林诗因”持有的所有外币的名称(源自rate_exchange表)以及持有数量(源自currency_sl表)，并将检索结果按持有数量升序排序存储在表rate_temp中，同时将使用的SQL语句存储于新建的文本文件ratE.txt中。 2．使用一对多报表向导建立报表。要求如下：父表为rate_exchange，子表为currency_sl；从父表中选择字段“外币名称”，从子表中选择全部字段；两个表通过“外币代码”建立联系；按“外币代码”降序排序；报表样式为“经营式”，方向为“横向”，报表标题为“外币持有情况”；生成的报表文件名为currency_repon。

A.用SQL语句完成下列操作：列出“林诗因”持有的所有外币的名称(源自rate_exchange表)以及持有数量(源自currency_sl表)，并将检索结果按持有数量升序排序存储在表rate_temp中，同时将使用的SQL语句存储于新建的文本文件ratE.txt中。
B.使用一对多报表向导建立报表。要求如下：父表为rate_exchange，子表为currency_sl；从父表中选择字段“外币名称”，从子表中选择全部字段；两个表通过“外币代码”建立联系；按“外币代码”降序排序；报表样式为“经营式”，方向为“横向”，报表标题为“外币持有情况”；生成的报表文件名为currency_repon。

【参考答案】

(1)【操作步骤】
步骤1：单击工具栏中的“新建”按钮，新建一个文本文件，
输入下列代码：
**......

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考生文件夹下的自由表employee中存放着职员的相关数据。 1．利用表设计器为employee表创建一个普通索引，索引表达式为“姓名”，索引名为xm。 2．打开考生文件夹下的表单文件formone，然后设置表单的Load事件，代码的功能是打开employee表，并将索引xm设置为当前索引。 3．在表单formone中添加一个列表框，并设置列表框的名称为mylist，高度为60，可以多重选择。 4．设置表单formone中mylist列表框的相关属性，其中RowSourceType属性为字段，使得当表单运行时，列表框内显示employee表中姓名字段的值。

问答题

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未知题型

Scientists working on a problem do not know and sometimes can&39;t even guess what the final result will bE.Late on Friday, 8 November, 1895, Professor Rontgen, a German physicist, was doing an experiment in his laboratory when he noticed something extraordinary. He had covered an electric bulb with black cardboard, and when he switched on the current he saw little dancing lights on his tablE.(46) ; how then could any ray penetrate? On the table there were some pieces of paper which had been covered with metal salts. (47) . Professor Rontgen took a piece of this paper and held it at a distance from the lamp. Between it and the lamp he placed a variety of objects, a books, a pack of cards, a piece of wood and a door key. The ray penetrated every one of them except the key. He called his wife into the laboratory and asked her to hold her hand between the lamp and a photographic platE.(48) , but she held up her hand for a quarter of an hour, and when the plate was developed there was a picture of the bones of her hand and of the ring on one finger. The mysterious ray could pass through the flesh and not through the bone or the ring.
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47
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48
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49
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50
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