Is it easy to take the CET-4 test for auto electrical maintenance workers?

The four-level automobile electrical maintenance post was obtained in the organic examination.

Auto mechanic level 4 is the second level of auto mechanic, that is, intermediate auto mechanic.

There are five grades of automobile mechanics, namely, primary (national vocational qualification level 5), intermediate (national vocational qualification level 4), advanced (national vocational qualification level 3), technician (national vocational qualification level 2) and senior technician (national vocational qualification level 1).