How long 120mg. well, the half-life of methadone can be up to 59-hours, so after 2 and half days you would still have 60mg's in your system. But this doesn't take into account multiple doses.
A third type of lock is a security lock. This lock is like a typical password, to prevent someone other than the owner from using the phone. If activated accidentally, the user manual or carrier customer service can usually tell you the default code.
Your passphrase provides security encryption for your wireless network. If you forget it, most operating systems provide a way for you to find it. The passphrase can also be referred to as a password, network security key, pre-shared key, or just key.