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If the following devices are all uniformly charged, which of them can produce a uniform electric field?
A、Infinitely long straight line
B、Circular ring
C、Solid sphere
D、Solid sphere with a spherical hole inside it
A、Infinitely long straight line
B、Circular ring
C、Solid sphere
D、Solid sphere with a spherical hole inside it
A、A、there is an excess supply of the good.
B、B、quantity supplied exceeds quantity demanded.
C、C、the current price is below its equilibrium price.
D、D、All of the above are correct.
A、Yangshao Civilization.
B、Majiayao Civilization
C、Dawenkou Civilization
D、Peiligang Civilization
The following passage is organized by the structure of ________. During the months from May to September, the Loggerhead turtle comes ashore to nest at night. First the turtle crawls out of the sea to the beach in search of the right place to build a nest for its eggs. Once the location is identified, the turtle digs a hole with its flippers that measures 8" wide and 18"deep. Next, he turtle lays around 120 eggs the size of ping-pong balls. The turtle then covers the nest by throwing sand over the nest with its flippers. The turtle does this to protect the eggs from predators. Finally, the turtle makes its way back to the sea, and does not return to attend to the nest.
A、chronological sequence
B、compare and contrast
C、classification
D、deduction
A、
B、
C、
D、
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