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Lesson1

Questions

1. By wearing a mask, an air space is placed between the diver’s eyes and the water so the objects can be_______________________
2. The lead weights usually are fixed to the weight belt; the belt should also...
3. Suits are protective clothing, which help to minimise thermal exposure effects on the body; this is due to the high thermal conductability of water. How much times higher is the water than air?

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