The first "blueprint" process for reproduction drawings was discovered around>
A. 1740
B. 1840
C. 1940
D. 1640
Answer: B
You might also like to view...
The figure below shows four waveforms labeled (a) to (d). Match the waveform to following signal type that is most likely:
a. Analog _____
b. Digital _____
c. Analog with noise______
d. Quantized analog ________
The electromagnet is a magnet produced through ____________________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Thermal energy transfer occurs whenever there exists a temperature difference within an object, or whenever there is a temperature difference between two bodies, or a temperature difference between a body and its surroundings. 2. The U.S. natural gas transportation network consists of 1.5 million miles of mainline and secondary pipelines. 3. Solar energy starts with the sun at an average distance of 93 million miles from earth. The sun is a nuclear fusion reactor, with its surface temperature at approximately 10,000° F (5500° C). 4. A direct passive solar system uses large glass areas on the south wall of a building and a thermal mass to collect the solar energy.
The ________ circuit is the backbone circuit of the PSTN and the customer's network
Fill in the blank(s) with correct word