Determine the length of the median of a trapezoid with bases of 28.36 centimeters and 43.82 centimeters.
Fill in the blank(s) with the appropriate word(s).
36.09 cm
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The journal Navigator is published monthly by the American Association of Petroleum Geologists
Indicate whether the statement is true or false
?What is an advantage of having two oxygen regulators on a machine-cutting torch?
A. ?It allows the cutting pressure to be adjusted without affecting the torch flame. B. ?It makes it easier to light the torch. C. ?It allows air to be used instead of oxygen for the flame. D. ?It makes it possible to change cylinders during a cut without stopping the cut.
Why is it important to measure the vacuum level on the system?
A) To determine when there is no more moisture B) To determine when evacuation is complete C) To determine when there is no more air D) To determine when evacuation has started
When leak testing a low pressure chiller, the pressure should not be allowed to exceed 10 psig
A) to avoid freezing the chiller bundle B) to avoid causing high compressor current draw C) to avoid opening the high pressure cutout and shutting the system down D) to avoid breaking the rupture disk and losing the refrigerant charge