In the following statement of 0, it is true that a.0 is neither positive nor negative, b 0 is the smallest integer, C 0 is a rational number, and d 0 is a non negative number The diameter of a part is 30 + 0.03-0.02 unit mm in the drawing, which means that the standard size of the part is 30mm, and the maximum machining size is required not to exceed () a.0.02 b0.03 c30.03 d29.98

In the following statement of 0, it is true that a.0 is neither positive nor negative, b 0 is the smallest integer, C 0 is a rational number, and d 0 is a non negative number The diameter of a part is 30 + 0.03-0.02 unit mm in the drawing, which means that the standard size of the part is 30mm, and the maximum machining size is required not to exceed () a.0.02 b0.03 c30.03 d29.98

The correct ones are a, C, D
The maximum is not more than 30.03mm, select C