The main advantage of a cement concrete sleeper, is :

1.	The main advantage of a cement concrete sleeper, is :
A.	its heavy weight which improves the track modulus
B.	its capacity to maintain gauge
C.	its suitability for track circuiting
D.	its flat bottom which is very suitable for modern track
Answer» E.

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The main advantage of a cement concrete sleeper, is :

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