Question

*What are the sealed tubes in a thermos flask made of?*

1️⃣ Iron
2️⃣ Glass
3️⃣ Steel
4️⃣ Plastic​

Answer 1

ᴀɴsᴡᴇʀ -

• sᴛᴇᴇʟ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ.

ᴛʜᴀɴᴋs~

Answer 2

Answer:

your answer

steel

Explanation:

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