The sleepers resting directly on girder are fastened to the top flange of girder by________________?

A. carbon and silicon
B. manganese and phosphorous
C. carbon and manganese
D. carbon and sulfur

A. stop
B. proceed
C. proceed cautiously
D. none of the above

A. 1 in 250
B. 1 in 222
C. 1 in 235
D. 1 in 275

A. 1:1
B. 1.5:1
C. 2:1
D. 1:2

A. flangeway clearance
B. heel divergence
C. throw of the switch
D. none of the above

A. always less than flangeway clearance
B. equal to flangeway clearance
C. always greater than flangeway clearance
D. sometimes greater than flangeway clearance