[单选] You create a master-detail form. The users need to be able to exit the form quickly, adhering to default transaction processing, regardless of the cursor location. You believe you can achieve this using a Key-Exit trigger. What do you need to do to implement this request? （）

A . Define a Key-Exit trigger for all the blocks in the form.
B . In the Object Navigator, highlight all the items and define a Key-Exit trigger.
C . Define a Key-Exit trigger on the primary key item in the master block.
D . No additional key-trigger definition is necessary.

高晓声描写“小人物”命运的《（）》和“陈奂生系列小说”等作品，被誉为“农民组曲”。沉井垫层的结构厚度和宽度应根据（），经计算确定。土体地基承载力。垫木的长度和宽度。沉井下沉结构高度。垫木的数量。沉井结构形式。 In which situation may the UNDO_RETENTION parameter be ignored， even if it is set to a value（） when the data file of the undo tablespace is autoextensible。 when there are more than one undo tablespaces available in the database。 when the undo tablespace is of a fixed size and retention guarantee is not enabled。 when the undo tablespace is autoextensible and retention guarantee is not enabled。在讨论用什么方法可以确定发动机冷却液温度传感器工作是否正常时，技术人员甲说，用万用表或示波器检查在不同温度条件下传感器输出信号是否满足要求，以此来判定传感器本身是否有故障；技术人员乙说，用万用表检查在不同温度条件下传感器的电阻值是否满足要求，以此来判定传感器本身是否有故障，请问谁的说法是正确的？（）只有甲正确。只有乙正确。两人均正确。两人均不正确。下列属于威胁计算机及网络安全完整性的因素是（）非法占用网络资源等人为因素。切断或阻塞网络通讯等人为因素。系统死锁等非人为因素。非法侵入等人为因素。 You create a master-detail form. The users need to be able to exit the form quickly, adhering to default transaction processing, regardless of the cursor location. You believe you can achieve this using a Key-Exit trigger. What do you need to do to implement this request? （）

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[单选] You create a master-detail form. The users need to be able to exit the form quickly, adhering to default transaction processing, regardless of the cursor location. You believe you can achieve this using a Key-Exit trigger. What do you need to do to implement this request? （）

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