Among the following, which can be adopted for providing support for s

1.	Among the following, which can be adopted for providing support for soft strata?
A.	Bents of aluminum
B.	Bents of iridium
C.	Bents of steel
D.	Bents of plastic
Answer» D. Bents of plastic

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The following tunnels were constructed in different countries for different purposes : 1. Emperor Claudius built the first Roman tunnel2. The first highway tunnel was constructed in Hungary3. The first underground railway tunnel was constructed in Great Britain4. The first navigational tunnel was constructed in France.The correct chronological development of these tunnels is:
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Among the following, which can be adopted for providing support for soft strata?

Among the following, which can be adopted for providing support for soft strata?

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