(2006)如图所示,直杆受扭转力偶作用,在截面1—1和2—2处的扭矩为:()
A:5kN·m,5kN·m
B:25kN·m,-5kN·m
C:35kN·m,-5kN·m
D:-25kN·m,25kN·m
出自:基础考试