10. The distance between the running face of the stock rail and the toe of the tongue rail, is known as
A. throw of switch
B. heel divergence
C. heel clearance
D. flangway clearance
10. The distance between the running face of the stock rail and the toe of the tongue rail, is known as
A. throw of switch
B. heel divergence
C. heel clearance
D. flangway clearance