A same meaning or not problem:
In modern times , it is mainly a competitive sport and recreational activity .
In modern times it is mainly a recreational sport and sporting activity .
****
[A]: no

A same meaning or not problem:
In spherical coordinates , the Hamilton operator can be written of a free particle moving in a conservative potential '' U '' .
In conservative potential coordinates the Hamiltonian of a free particle moving in a spherical '' U '' can be written
****
[A]: no

A same meaning or not problem:
I tried to buy it when George Romney ( later Michigan governor ) and Roy Abernethy were running AMC .
I tried to buy it when Roy Abernethy ( later Michigan Governor ) and George Romney run AMC .
****
[A]: no

A same meaning or not problem:
A mechanical control valve actuator converts energy ( typically in the form of compressed air ) into pneumatic motion .
A mechanical control valve actuator transforms energy ( typically in the form of compressed air ) into pneumatic motion .
****
[A]:
yes