2024 OH CDL Practice Test: Tank - Test 4 Based on 2024 OH CDL Handbook 6. ________ help to control the forward and backward liquid surge. A Baffles. B Liquid switch. C C-Clamps. D Daffles. Next More 6/28 Progress 0 Errors Restart Next Next Tank - Test 4 Back to Test List Tank - Test 3 Tank - Test 5 Challenge Library 12 More OH CDL Practice Tests 33 Tank - Test 5 34 Air Brakes - Test 35 All - Test 36 All - Test 2 37 All - Test 3 38 Tank and Hazmat - Test 39 Tank and Hazmat - Test 2 40 Class C - Test 41 Class C - Test 2 42 Class C - Test 3