1) In the second-best category 2) Stock designation 
[classification] Class B is a Paralympic wheelchair fencing classification. ==Sport== This is a Paralympic wheelchair fencing classification. In 2000, BBC Sport defined this classification as `class B those with poor balance and recovery but full use of one or both upper limbs` In 2008, BBC Sport defined this classification was `B: Athletes...
A fire involving hydrocarbons. See Fire Classes.
operation class of an amplifying stage, characterized by a flow of output current for approximately half of each period of the sinusoidal input signal