Hydrogen trains:-- Hydrogen trains are equipped with fuel cells that produce electricity by combining hydrogen with oxygen.
This conversion process only emits steam and water, thus producing zero emissions.
Excess energy produced is stored in ion-lithium batteries on board train.
These trains also make very little noise. Moreover, hydrogen fuel cells have advantages over batteries.
Backdoor of windows:- Exe file for sticky keys: sethc.exe (Location:c:\windows\system32) Exe file for command prompt: cmd.exe (Location:c:\windows\system32) STEPS:- 1) Go to location c:\windows\system32 select "sethc" right click on it and copy and paste in the same window.. now we get the "sethc-Copy" named file. 2) now rename original "sethc" as "cmd". 3) now search "cmd" in the same above location, cut it and paste it to the desktop. 4) now rename "cmd" which is on the desktop as "sethc". 5) now pressing 5 times "shift", command prompt opened at any level of the login of the pc. 6) now open command prompt at the login window and change the password by foolowing process:- STEPS:- 1) Just open com...
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