Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 220 of 533

When coupling the semi-trailer, before connecting the flexible tubes you will obligatorily operate:

A the parking brake of the tractor;
B the hydraulic retarder;
C the service brake of the tractor.

Explanation

When coupling the semi-trailer, before connecting the flexible tubes you will obligatorily operate the parking brake of the tractor. The correct answer is A.

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