2024 UT CDL Practice Test: Tank and Hazmat - Test Based on 2024 UT CDL Handbook 3. What helps control the forward and backward liquid surge? A Daffles. B C-Clamps. C Liquid switch. D Baffles. Next More 3/30 Progress 0 Errors Restart Next Next Tank and Hazmat - Test Back to Test List All - Test 3 Tank and Hazmat - Test 2 Challenge Library 12 More UT CDL Practice Tests 1 Class A - Test 1 39 Tank and Hazmat - 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