Technician A says to never look away from a vehicle being hoisted. Technician B says that the vehicle must be raised off the mechanical locks before lowering. Which technician is correct?
A) Technician A only B) Technician B only
C) Both technicians A and B D) Neither technician A nor B
C
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In modeling this process, assume the passage of sufficient time for the broken egg to return to its initial temperature. What is the origin of the heat transfer of part (e)?
An egg, initially at rest, is dropped onto a concrete surface and breaks. With the egg treated as the system,
(a) What is the sign of W?
(b) What is the sign of 
(c) What is 
(d) What is 
(e) What is the sign of Q?
What civilization had the most extensive plumbing system available in civilization up to that time?
A. Roman Empire B. ancient Greeks C. Ottoman Empire D. ancient Babylonians
A pneumatic drill is commonly used _____
a. in areas where noise is a problem b. to supply compressed air to de-burr pipes c. when there is no source of electricity d. for intricate detail work
What is used to clean the surfaces of the heat exchanger?
A) wire brush B) razor blade C) abrasive sponge D) soft cloth