List the three categories of respirators.
What will be an ideal response?
Supplied air, SCBA and air purifying
You might also like to view...
What mechanical feature defines the limits within which EUI fuel pulse width (PW) must take place?
A. injector cam profile B. camshaft position signal C. valve cam profiles D. crankshaft position signal
?When waste spark ignition is used on an engine, when is the waste spark delivered to the engine cylinder?
A. ?Piston at TDC on compression stroke B. ?Piston at TDC on exhaust stroke C. ?Piston at BDC on power stroke D. ?Piston at BDC on intake stroke
A(n) ____ hole is a cone-shaped recess machined in a part to receive a coneshaped flathead screw or bolt.
A. countersunk B. extension C. chamfered D. counterbored
Split system heat pumps have a third service valve that is not connected to either refrigerant line. This extra valve:
A) Is only needed during the cooling cycle. B) Is a backup in case one of the other service valves quits functioning. C) Is used to read the defrost pressures during the defrost cycle. D) Is always connected to the low side of the system regardless of the operating cycle.