CDL questions?

like the others said pre trip is the biggest thing. touch and name EVERYTHING.. also pay close attention to signs over head for height clearences or bridge weight limits. they may ask you what the height limit was for and over pass you went under 5 miles back. ask me how i know. as for haz mat. read and right down everything as you go. its alot to remember. here in nc we have a 30 question test. im going this morn to renew mine. good luck. take your time and you ll do fine.