i want to know how to recognize the type of transistor.
IF its a transistor, then if its NPN a diode check measuring from the base +ve to the collector should show roughly 0.6V and likewise to the emitter. Reversing the connection should show no conduction.
Likewise, if its a PNP transistor, measuring the from the base -ve to the collector should ALSO show 0.6V and likewise ALSO to the emitter. Reversing this connection should show no conduction.
....and you could always look up the data sheet....
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See my answer on your other question, if this doesn't do it let me know. It's essentially the same answer I gave you on this question:https://www.instructables.com/answers/How-to-know-if-the-given-component-is-IC-or-Transi/(It does work)L