2024 NC CDL Practice Test: Tank and Hazmat - Test 2 Based on 2024 NC CDL Handbook 3. What helps control the forward and backward liquid surge? A Liquid switch. B Baffles. C C-Clamps. D Daffles. Next More 3/30 Progress 0 Errors Restart Next Next Tank and Hazmat - Test 2 Back to Test List Tank and Hazmat - Test Class C - Test Challenge Library 12 More NC CDL Practice Tests 1 Class A - Test 1 2 Class A - Test 2 40 Class C - Test 41 Class C - Test 2 42 Class C - Test 3 43 Class C - Test 4 44 Class C - Test 5 45 Bus - Test 46 Bus - Test 2 47 Bus - Test 3