Which of the subsequent is an vital function to recall whilst choosing a diving mask?
A) Purge valve.
B) High internal extent.
C) Tempered or protection glass.
D) Metal body. - ANSc
Snorkels over 15 inches (38 centimeters) in period are not advocated basically because:
a) They have too much dead air area.
B) They are probably to become tangled.
C) They aren't low-priced to manufacture.
D) They are top-heavy and tough to use. - ANSa
When shopping for or renting system for diving, the maximum essential attention is:
a) Its cost.
B) Its healthy to your body.
C) How recently it became developed.
D) Its sturdiness. - ANSb
Three functions that are commonplace to all buoyancy manipulate devices are:
a) An included weight system, brilliant coloration, inflation/deflation hose.
B) An overpressure comfort valve, CO2 inflation cartridge, alternate air source.
C) An change air source, low stress inflator, overpressure relief valve.
D) An overpressure remedy valve, inflation/deflation hose, low strain inflator hose. - ANSd
Three forms of change air sources which are in not unusual use today are:
a) Full face masks, completely redundant structures, octopus rigs.
B) Octopus rigs, absolutely redundant structures, an incorporated regulator into the BCD
inflation/deflation hose.
C) Titanium cylinders, full face mask, octopus rigs.
D) Integrated regulator into the BCD inflation/deflation hose, octopus rigs, technical rigs. - ANSb
According to the United States Department of Transportation rules, scuba tanks ought to be
hydrostatically tested each:
a) 1 yr.
B) 3 years.
C) five years.
D) 10 years. - ANSc
The number one motive of the exposure match is to:
a) Preserve frame warmness all through dives.
, B) Look exact whilst diving.
C) Provide buoyancy at some stage in dives.
D) Prevent scrapes and cuts all through dives. - ANSa
At a minimum, while diving most dive computer systems display:
a) Minimum depth, actual backside time, water temperature.
B) Maximum intensity, present day depth, actual bottom time, closing allowable backside
time.
C) Maximum intensity, closing allowable backside time, air temperature.
D) Minimum depth, modern-day depth, unavailable bottom time. - ANSb
You need to have your regulator serviced by a certified repair technician
a) once every 5 years
b) as a minimum as soon as in step with 12 months
c) as soon as, right away once you purchase it
d) once every ten years - ANSb
Two kinds of substances that scuba tanks are crafted from are steel and _________.
A) aluminum
b) titanium
c) chrome steel
d) graphite - ANSa
The _________ line is the route of travel line on the compass.
A) index/tick mark
b) lubber
c) degree
d) descent - ANSb
The dive knife is used basically as a _________ for digging, slicing, pounding and prying.
A) weapon b) report
c) tool
d) measure - ANSc
Atmospheric pressure at sea stage is:
a) 29.4 kilos according to rectangular inch/ 2.0 atmospheres absolute (2.03 bar).
B) 14.7 pounds consistent with square inch/1.Zero ecosystem absolute (1.01 bar).
C) 44.1 kilos consistent with rectangular inch/ three.0 atmospheres absolute (three.04 bar).
D) fifty eight.8 pounds consistent with square inch/ four.0 atmospheres absolute (four.05 bar). -
ANSb
A sealed balloon packed with air that has a quantity of four liters at 99 ft of seawater (30.2 m)
could have a quantity of ____________ at 33 feet of seawater (10.1 m).
A) 2 liters.
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