This second speed is different from the first speed.

The first speed is different from the second speed.

Motor vehicle gearbox (14) with seven forward gears and one reverse gear, a first forward gear being a crawling gear or hill gear, having an output shaft (19) which is coaxial with the input shaft (17), and a countershaft (20).

The second average velocity is lower than the first average velocity.

Preferably, the second speed is greater than the first speed.

The movable layer moves from a first position to a second position at a first rate and from the second position to the first position at a second rate faster than the first rate.

Each variable speed motor is operable at a speed between a first speed and a second speed.

The second velocity (Vs) is set lower than the first velocity and the third velocity.

Preferably, the second rate may be greater than the first rate.

The inlet (9) receives the liquid receives the liquid at a first speed and delivers it to the user at a second speed which is substantially less than the first speed.

The controller (54) provides power to the piezoelectric motor (34) to move the shaft with a first speed and a second speed, the first speed being faster that the second speed.

The first transfer rate is greater than the second transfer rate.

The second rotational rate is greater than the first rotational rate.

The first drive velocity is preferably less than the second drive velocity.

The second rotational rate is greater than the first rotational rate.