Direct current is an electron flow in only one direction.
Answer the following statement true (T) or false (F)
True
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Technician A says that the cooling system should be tested for leaks using an air-operated pressure pump. Technician B says the freezing and boiling point of the coolant can be tested using a thermometer. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
The highest element address number of an instruction in a control file is __________.
A. 83 B. 84 C. 255 D. 256
One mole of air, initially at 150°C and 8 bar, undergoes the following mechanically reversible changes. It expands isothermally to a pressure such that when it is cooled at constant volume to 50°C its final pressure is 3 bar. Assuming air is an ideal gas for which 
and 
calculate W, Q, ?U, and ?H.
What will be an ideal response?
Leif Erickson's workers harvested timber to send home by ship
Indicate whether the statement is true or false