Multilevel Specialty

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There are 20 questions in total.
You must answer at least 16 questions correctly to pass.

You will be notified of your test results by e-mail.

You can use the email notification of 16 or more correct answers as proof of passing the exam.

Present your email notification to your instructor to attend the practical training.

Email *

Name

[e.g. John Smith]

Country

[e.g. Japan]

The dive computer uses a sensor to sense the depth of the water <> and calculates the amount of nitrogen accumulated.
*

1 point

once every second

once every 10 seconds

once every minute

once every hour

Dive computers do not have large errors in nitrogen content calculations, unlike dive tables, so they are ideal for <>.
*

1 point

drift ice diving

repetitive diving

night diving

deep diving

Ascending at high ascent speeds causes <>. *

1 point

blood to clot inside your body.

Lung rupture inside the body

nitrogen bubbles inside the body

consumes oxygen inside the body

<> that does not cause decompression sickness is effective for expelling nitrogen.
*

1 point

Ascending at a maximum ascent speed

Ascending at the minimum ascent speed

Descending at the maximum speed

Descending at the minimum speed

A dive computer is a very reliable piece of equipment as it provides information on the amount of nitrogen in your body <>.
*

1 point

based on an ascent speed of 1m/min.

based on an ascent speed of 10m/min

based on an ascent speed of 18m/min

based on the actual ascent speed

Once you begin your descent, nitrogen will begin to dissolve into your body <>. *

1 point

after 3 minutes

after 5 minutes

at rapid rate

at slow speed

Once you start ascent, nitrogen will be expelled from your body <>.

1 point

after 3 minutes

after 5 minutes

at rapid rate

at slow speed

If you are using a diving computer and it becomes necessary to make a decompression stop, <> is the depth that will shorten the decompression time.
*

1 point

the ceiling depth

the floor depth

water depth 5m

water depth 3m

If you are using a dive computer and it becomes necessary to make a decompression stop, <> is the depth at which the decompression stop time will not increase unless you dive deeper.
*

1 point

the ceiling depth

the floor depth

Water depth 5m

Water depth 3m

If you are using a dive computer and you need to make a decompression stop, you can decompress<>.
*

1 point

between the ceiling depth and the floor depth

at a depth shallower than the ceiling depth

at depth deeper than floor depth

at depth shallower than 3m

If the depth becomes shallow during the ascent, <>. *

1 point

the dive computer will display a deeper water depth.

the no-decompression available dive time on the dive computer will be displayed longer.

the no-decompression available dive time on the dive computer will be displayed shorter.

the flight time on the dive computer will be displayed longer.

The <> is not designed for dive profiles that initially reach maximum depth and then spend extended periods at shallow depths during ascent.
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1 point

dive plan

diving watch

dive table

dive computer

<> calculates and displays the accumulation of nitrogen for dive profiles that involve staying at shallow depths during ascent rather than remaining at a constant depth.
*

1 point

A dive plan

A diving watch

A dive table

A dive computer

It is better to use a dive table instead of a dive computer when making a dive plan because <>.
*

1 point

Dive computers display approximate no-decompression diving time and lack safety

Dive computers calculate the actual and accurate amount of nitrogen and display the possible no-decompression diving time, so there is little safety margin

Dive computers are unreliable because you don't know when they will break down

Dive computers can run out of battery

<> because dive computers record residual nitrogen from previous dive profiles.
*

1 point

A dive computer cannot be shared by more than two people

You can use someone else's dive computer

Do not use a dive computer owned by someone else

You can use your buddy's own dive computer

During diving, nitrogen is eliminated by gradually <>.
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1 point

increasing the amount of exercise.

reducing the water depth

increasing body temperature

increasing your mood.

Always carry a dive computer not only while diving but also when<>
*

1 point

boarding an airplane.

eating meals.

bathing.

taking a nap.

If your dive computer malfunctions or the battery runs out and you can no longer use it, <>.
*

1 point

continue diving and ascend at the maximum ascent speed specified by your dive computer.

stop the dive immediately and ascend at the maximum ascent speed specified by your dive computer.

you can share your buddy's dive computer and continue diving.

think twice to avoid something like this happening next time.

The time for the tissue to become saturated is calculated by multiplying the time for the tissue to become half the nitrogen in the saturated state (halftime) by <>.
*

1 point

1.5

Based on the longest tissue half-saturation times used in typical dive computers, the surface interval for boarding a plane is either 72 hours or <>. *

1 point

12 hours

24 hours

36 hours

48 hours

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