During an acceleration phase at constant attitude, the control system of the artificial horizon results in the horizon bar indicating a:

1) A gravity erector system is used to correct the errors on:

2) A gravity type erector is used in a vertical gyro device to correct errors on:

3) A Stand-by-horizon or emergency attitude indicator:

4) During an acceleration phase at constant attitude, the control system of the artificial horizon results in the horizon bar indicating a:

5) The artificial horizon uses a gyroscope with:(Note: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.)