Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and ___________________?

Work hardenable alloy steel used to make the bucket wheel excavators,

1.	Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and ___________________?
A.	Manganese
B.	Silicon
C.	Nickel
D.	Chromium
Answer» B. Silicon

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Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and ___________________?

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