Under managed mode, the application server interfaces with resource adapters to manage quality of service features such as connection pooling, transaction management, tracing, and security.
3
你可以使用一个便宜的npn型晶体管，比如2n2222，放大该脉冲到后续电子元件的接口。
You can use a cheap NPN transistor such as a 2n2222 to amplify this pulse, to interface with the next stage of electronics.
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