Solution: (1)① According to the assumption that the number of Class A diesel generators is X, the number of Class B diesel generators is Y. 。

It is concluded that the number of C diesel generators is10-x-y;

②∫4x+3y+2( 10-x-y)= 32，

∴y= 12-2x；

(2) According to Class C diesel generators, there are 10-x-y=(x-2),

Solve inequalities according to the meaning of the question:

x≥ 1

12? 2x≥ 1

x？ 2≥ 1

Get: 3≤x≤5.5,

∵x is a positive integer,

∴x=3,4,5，

Therefore, the different distribution schemes of diesel generators A, B and C are: A 5, B 2, C 3, or A 4, B 4, C 2 or A 3, B 6, C 1.