Which of the following is an accepted practice when using pneumatic power tools?
a. The air supply can be temporarily shut off by crimping the hose.
b. Other gases such as argon and neon can be used in place of air.
c. Air hoses must be drained or blown out before attaching them to tools.
d. Air hoses can be repaired with special tape rated for the purpose.
c. Air hoses must be drained or blown out before attaching them to tools.
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Which of the following are the code requirements for fire ratings in mechanical/electrical spaces? Select all that apply.
A) Chiller rooms do not need fire ratings unless the refrigerant is flammable. B) A 1-hour room is needed if there is a dry type transformer rating higher than 112-1/2 kVA. C) All gas fired boiler rooms need to be fire rated. D) Electrical rooms with switchboards and panels do not need rated walls.
Three duties of the hurricane crew are:
What will be an ideal response?
Small engines have a device called a _____ that mixes gasoline with air
A) cylinder? B) carburetor? C) piston? D) compressor
A(n) ____________________ motor is a self-contained drive made up of a ball-bearing motor and a speed-reducing gear box.
Fill in the blank(s) with the appropriate word(s).