It can be inferred from the passage that which of the following presents the greatest danger to a diver?

Câu hỏi :

It can be inferred from the passage that which of the following presents the greatest danger to a diver?

A Nitrogen diffusion   

B An air embolism

C Nitrogen bubbles         

D Pressurized helium

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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