Loose jaws of steel trough sleepers are made of___________________?

A. head
B. web
C. foot
D. head and foot both

A. 55 mm
B. 65 mm
C. 75 mm
D. l00 mm

A. 89 mm
B. 95 mm
C. 100 mm
D. 115 mm

A. 15.0 tonnes
B. 22.5 tonnes
C. 45.0 tonnes
D. 90.0 tonnes

A. center to center of rails
B. running faces of rails
C. outer faces of rails
D. none of the above

A. 1
B. 2
C. 5
D. 10