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问题 多项选择题

证券交易所交易无法正常结束的情形是指（）。

A.交易结果出现严重错误

B.集合竞价异常可能导致无法正常完成

C.收市处理无法正常结束

D.前一交易日的日终清算交收处理未按时完成或虽已完成但清算交收数据出现重大差错而导致无法正确交易

答案

参考答案：B, C

解析：熟悉证券交易异常情况的处理规定。

单项选择题

You can tell the age of a tree by counting its ring. But these records of a tree’s life really say a lot more. Scientists are using tree ring to learn what’s been happening on the sun’s surface for the last ten thousand years. Each ring represents a year of growth. As the tree grows, it adds a layer to its trunk, taking up chemical elements from the air. By looking at elements in the rings from a certain years, scientists can tell what elements were in the air that year. Dr. Stevenson is analyzing one element, carbon-14, in ring from both living and dead tree. Some ring go back almost ten thousand year to the end of the Ice Age. When Stevenson followed the carbon-14 levels changed with the intensity of solar burning. You see, the sun has cycles. Sometimes it bums fiercely, and at other times it is relatively calm. During the sun’s violent periods, it throw off charged particles in fast moving streams called "solar winds". The particularly interfere with the formation of carbon-14 on earth. When there is more solar wind activity, less carbon-14 is produced. Ten thousand years of tree ring show that the carbon-14 level rises and falls about every 420 years. The scientists concluded that solar wind activity must follow the same cycle.

When the sun burn fiercely, () carbon-14 is produced.

A. less

B. more

C. no

D. much
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问答题

考生文件夹下有一个数据库文件“samp3.accdb”，其中存在已经设计好的表对象“tEmployee”和宏对象“ml”，同时还有以“tEmployee”为数据源的窗体对象“fEmployee”。请在此基础上按照以下要求补充窗体设计。

注意：不能修改窗体对象“fEmployee”中未涉及的控件和属性；不能修改表对象“tEmployee”和宏对象“ml”。

程序代码只允许在“*****Add*****”与“*****Add*****”之间的空行内补充一行语句、完成设计，不允许增删和修改其他位置已存在的语句。

将命令按钮bList的标题设置为“显示雇员情况”。
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