以下（）有关事件监听器的语句是正确的。
A: AMultiple listeners can be attached to one component
B: BOnly one listener can be attached to one component
C: COne listener can receive and process the events from multiple components
D: DOne listener can receive and process the events from only one component
A: AMultiple listeners can be attached to one component
B: BOnly one listener can be attached to one component
C: COne listener can receive and process the events from multiple components
D: DOne listener can receive and process the events from only one component
举一反三
- 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.
- Which statements are true regarding listeners（） A: Listeners use only the TCP/IP protocol. B: Multiple listener processes can run simultaneously on a host. C: Multiple database instances can be registered with a single listener. D: The listener-related errors can be traced only at the administrative level. E: Only one database instance can be registered with a single listener at any time
- Which two statements are true regarding listeners（） A: Listeners use only the TCP/IP protocol. B: Multiple listener processes can run simultaneously on a host. C: Multiple database instances can be registered with a single listener. D: The listener-related errors can be traced only at the administrative level. E: Only one database instance can be registered with a single listener at any time.
- Can class be implemented by more than one component?
- Can class be implemented by more than one component? A: 正确 B: 错误