Why might adjusting the oxygen flow during a brazing project by standing in front of the cylinder and slowly opening the valve all the way create a hazardous situation?
A) The valve should only be opened halfway.
B) The valve should only be opened two-and-a-half turns.
C) The valve should be opened quickly to relieve pressure.
D) The valve should be opened while standing behind the cylinder.
D
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Answer the following statement(s) true (T) or false (F)
1. Fuel cells contain several different subsystems. 2. Process Flow Diagrams are the most complex of all the diagrams used to present process data in a detailed graphical format. 3. Process Flow Diagrams use symbols to represent a number of different things within a process 4. The main purpose of Piping and Instrumentation Diagram sets is to identify the lines, loops, instruments, and devices used to control a process. 5. Piping and Instrumentation Diagram layouts should mimic the actual process flow as much as possible.
A refrigeration system designed for the storage of flowers or candy is considered a ____ type.
A. high temperature B. medium temperature C. low temperature D. sharp freezing
The most effective way to vent moisture from under a roof is __________.
Fill in the blank(s) with the appropriate word(s).
A compressor that compresses gas between a fixed spiral and an orbiting spiral is a:
A) Screw compressor. B) Centrifugal compressor. C) Rotary compressor. D) Scroll compressor.