深潜器期末考试 (Deep Diver Final Exam)

What is the maximum recommended depth for recreational scuba divers with a Deep Diver certification?

18 metres

30 metres

40 metres

60 metres

How many litres of gas are there in a 15 litre cylinder filled to 180 bar?

1800 litres

2700 litres

1500 litres

15 litres

Which of these risks increase with deep diving? Select all that apply

Nitrogen Narcosis

Decompression Illness

Oxygen Toxicity

Running low on or out of air

How can you avoid running out of gas while deep diving? Select all that apply

Check your gas supply regularly

Take smaller breaths

Plan your dives with plenty of reserve gas

Use your buddy's alternate air source

Which of these are recommended equipment items for deep diving? Select all that apply.

Wetsuit

Backup Breathing Systems

Dive computer

Safety and Navigation Equipment

What is the purpose of a safety stop during a deep dive?

To take a break and rest

To check your dive computer

To allow the body to off-gas and reduce the risk of decompression sickness

To calculate your remaining no-decompression time

How does a diver avoid nitrogen narcosis?

By using a dry suit

By staying within recreational depth limits

By diving in warm water

By using enriched air (Nitrox)

What is the most common method for avoiding decompression sickness?

Rapid ascents

Exceeding dive limits

Following no-decompression limits and performing safety stops

Diving alone

Which of the following gases is most likely to cause decompression sickness?

Oxygen

Nitrogen

Carbon Dioxide

Helium

Which of the following is NOT a symptom of decompression sickness?

Euphoria

Joint pain

Skin rash

Dizziness