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问题 单项选择题

能够将表单的Visible属性设置为.T.，并使表单成为活动对象的方法是( )。

A．Hide

B．Show

C．Release

D．SetFocus

答案

参考答案：B

解析： 能够将表单的Visible属性设置为.T.，并使表单成为活动对象的方法是Show。

问答题

-ZAO- Food operates several shops that sell fresh, processed and frozen foods to retail shoppers. Having taken a delivery of frozen foods from a supplier, the goods were placed in temperature-controlled display units in the shop. The display units were supplied by the frozen food manufacturer, who also provided documentation on how the units were to be used. Sasha, an employee in one of the shops, accidentally set the temperature of the frozen food storage units incorrectly. As a result, several customers complained that members of their families had become unwell after consuming frozen food purchased in the shop. Some customers have stated that they will take legal action to recover medical costs and lost wages due to absence from work. Sasha claims that he was not given training on the use of the display units. -ZAO- Food claims that the documentation supplied with the display units does not clearly indicate correct storage temperatures.Required:Discuss the potential liability of the frozen food manufacturer, -ZAO- Food, and Sasha for injury caused to the customers of the shop, and the matters that the court will take into account when attributing liability. (10 marks)
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单项选择题

如果事务只提交对数据库所做更新的一部分而不是全部，这违反了事务的（）

A.原子性

B.一致性

C.隔离性

D.持久性
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