In a railway track, two rails are joined end to end with a gap in betw – McqOptions

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1.	In a railway track, two rails are joined end to end with a gap in between them because
A.	teel can be saved
B.	ccidents due to contraction in winter can be avoided
C.	ir-gaps are necessary for bearing the weight of running train
D.	ccidents due to expansion in summer can be avoided
Answer» E.

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