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আপনার পছন্দের থিম বেছে নিন।

Why does the passage give the example of the aircraft industry?

A. To emphasise the importance of the aircraft industry.

B. To demonstrate how alloys can be used to solve industrial problems.

C. To show how materials can be used without alloying.

D. To show the negative side of alloys.

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সঠিক উত্তরঃ B. To demonstrate how alloys can be used to solve industrial problems.

Explanation: