Energy
Since there is no such thing as a trem it is not surprising that 3x plus y is not a trem!
Trem da Alegria was created in 1984.
Trem da Alegria ended in 1993.
Trem Desportivo Clube was created in 1947.
defind human resources managment in the public secor?
Long
O Trem da Morte was created in 1924.
Trem Carr was born on November 6, 1891, in Trenton, Illinois, USA.
It seems there may be a typo in your question. Could you please provide more context or clarify what you mean by "defind sign"?
No they do not.
kinetic energy
You say "seu trem está na hora certa" or "seu trem está pontual"