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At a minimum, while diving, most dive computers display: - ✔✔Maximum
depth, current depth, actual bottom time, remaining allowable bottom time.
Which of the following is an essential feature to consider when selecting a
diving mask? - ✔✔Tempered or safety glass
Snorkels over 15 inches (38 centimeters) in length are not recommended
primarily because: - ✔✔They have too much dead air space.
When buying or renting equipment for diving, the most important
consideration is: - ✔✔Its fit on your body.
When rinsing a regulator it is best to: - ✔✔Leave the regulator attached to
the tank or have the dust cap in place.
Three features that are common to all buoyancy control devices are: -
✔✔An overpressure relief valve, inflation/deflation hose, low pressure
inflator hose.
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, Three types of alternate air sources that are in common use today are: -
✔✔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: - ✔✔5 years
The most important functional feature of a weight belt or weight system is: -
✔✔A means for ditching the weights immediately with one hand.
The primary purpose of the exposure suit is to: - ✔✔Preserve body heat
during dives.
You should have your regulator serviced by a certified repair technician: -
✔✔At least once per year.
The stage of the regulator which reduces tank pressure is: - ✔✔first
Two types of materials that scuba tanks are made from are steel and
_________. - ✔✔aluminum
The _________ line is the direction of travel line on the compass. -
✔✔lubber
The dive knife is used primarily as a _________ for digging, cutting,
pounding and prying. - ✔✔Tool
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