Sometimes a product leads to the development of ____ items, which are used in conjunction with the original item.
A. accessory
B. replacement
C. benchmark
D. redesigned
Answer: A
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Compared with canals, railroads
A. were more expensive than canals to construct. B. transported freight more slowly. C. faced much less political opposition by vested economic interests. D. required less technological obstacles to overcome to construct and operate them safely. E. could be built almost anywhere with sufficient financial capital.
When a refrigerant enters the compressor, it is a ____ and when it leaves the compressor, it is a ____.
A. low pressure low temperature superheated vapor, high pressure high temperature superheated vapor B. low pressure low temperature superheated vapor, low pressure low temperature subcooled vapor C. high pressure superheated vapor, low pressure superheated vapor D. low pressure low temperature subcooled liquid, high pressure high temperature superheated vapor
The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).
If V1 = 0V (short), V2 > 0, and R1 = R2 = R, what is Vd?
A. V2 / 2 B. V2 C. ?V2 / 2 D. 0 E. ?V2
Stage effects and electrical equipment used as stage properties can be wired with ____ or cables.
A. standard single strand cable B. single- or multiconductor listed flexible cords C. dual-strand rigid copper wire D. single-strand copper wire