What feature is important in buying a dive mask?
A)Purge Valve
B)High Internal Volume
C)Tempered or Safety Glass
D)Metal Frame correct answers C)Tempered/Safety Glass
Snorkels over 15 inches (38 centimeters) in length are not recommended primarily because:
A)They have too much dead air ...
Snorkels over 15 inches (38 centimeters) in length are not recommended primarily because:
A)They have too much dead air space.
B)They are likely to become tangled.
C)They are not economical to manufacture.
D)They are top-heavy and difficult to use. correct answers A)Too much dead air space
When buying or renting equipment for diving, the most important consideration is:
A)Its cost.
B)Its fit on your body.
C)How recently it was developed.
D)Its durability. correct answers B)It's fit to your body
When rinsing a regulator, it is best to:
A)Leave the regulator attached to the tank or have the dust cap in place.
B)Depress the purge button several times.
C)Use ionized water.
D)Have the first stage lower than the second stage. correct answers A)Leave regulator attached,
or dust cap in place.
Three features common to buoyancy control devices are:
Three types of alternate air sources That are in common use today are:
A)Full face masks, completely redundant systems, octopus rigs.
B)Octopus rigs, completely redundant systems, an integrated regulator into the BCD
inflation/deflation hose.
C)Titanium cylinders, full face masks, octopus rigs.
, D)Integrated regulator into the BCD inflation/deflation hose, octopus rigs, technical rigs. correct
answers B)Octopus rigs, completely redundant systems, an integrated regulator into the BCD
inflation/deflation hose.
According to the United States Department of Transportation regulations, scuba tanks must be
hydrostatically tested every:
A)1 year
B)3 years
C)5 years
D)10 years correct answers C)5 years
The most important functional feature of a weight belt or weight system is:
A)A means for ditching the weights immediately with one hand.
B)Comfort.
C)The capability of the belt or system to use only certain types of weight media.
D)Bright color for ease of identification. correct answers A)A means for ditching the weights
immediately with one hand.
Primary purpose of exposure suit is to:
A)Preserve body heat during dives.
B)Look good while diving.
C)Provide buoyancy during dives.
D)Prevent scrapes and cuts during dives. correct answers A)Preserve body heat during dives.
At a minimum, while diving, most dive computers display:
A)Minimum depth, actual bottom time, water temperature.
B)Maximum depth, current depth, actual bottom time, remaining allowable bottom time.
C)Maximum depth, remaining allowable bottom time, air temperature.
D)Minimum depth, current depth, unavailable bottom time. correct answers B)Maximum depth,
current depth, actual bottom time, remaining allowable bottom time.
You should have your regulator serviced by a certified repair technician:
A)Once every five years.
B)At least once per year.
C)Once, immediately after you buy it.
D)Once every ten years. correct answers B)At least once per year.
The stage of the regulator which reduces tank pressure is:
A)second
B)first
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