Via the use of a small internal pump, air is pushed out of the electronic leak detector and, if refrigerant is detected, the audible tone that the detector emits will change.
Answer the following statement true (T) or false (F)
False
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Which of these cannot be extruded?
a. line b. polysolid c. circle d. rectangle
BST is a hormone that is very expensive to produce
Indicate whether the statement is true or false.
Because of the constant-potential power supply, the welding current will change as the distance between the ____________________ and the work changes.
Fill in the blank(s) with the appropriate word(s).
?What is different about the collector circulator for drainback-protected systems as compared with that of antifreeze-protected systems?
A. ?It only needs a single circulator as opposed to two circulators. B. ?It must not allow air bubbles to be entrained in the return piping. C. ?It must lift water from the static water level in the tank to the top of the collector array. D. ?It must have potential for overcoming increased frictional head loss in the collector piping.