chemical synapse conduct signals through neurotrasmitters
D.
electrical synapse is type of gap junction
E.
two-way transfer impulse
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【单选题】Ever since Uranus was discovered in 1781, astronomers have thought there might be more planets to be discovered in the Solar System. Because of small deviations in the orbits of Uranus and Neptune - d...
A.
From the fact that the old data is inaccurate, it cannot be inferred that the calculated orbits are wrong.
B.
From the fact that the data about the orbits is old it cannot be inferred that it is inaccurate.
C.
From the fad that deviations occur which would occur if Planet X existed, it cannot be inferred that Planet X exists.
D.
From the fact that the calculated orbits are wrong, it cannot be inferred that Uranus and Neptune will deviate from them.
E.
From the fact that Planet X has not been discovered, it cannot be inferred that the search for it is futile.