Controlling can focus on events before, during or after a process.
举一反三
- Visiting can be divided into three phases A: before the visit B: during the visit C: after the visit D: other
- When the Aw value is fixed, the moisture content of the food during the desorption process is greater than or equal to the moisture content during the re-sorption process.
- ( ) is the provision of service to customers before, during and after a purchase.
- ESP lets people know___________. A: about events before they happen B: about events after they happen C: about events that are happening some distance away D: A and C
- Which statements of the event listener are true A: Multiple listeners can be attached to one component. B: Only one listener can be attached to one component. C: One listener can receive and process the events from multiple components. D: One listener can receive and process the events from only one component.