When testing intake manifold vacuum, the gauge reads normal at idle, but reads very low when the engine is held steady at 2,500 rpm. technician a says this indicates worn valve guides. technician b says this indicates a restricted exhaust system. who is correct?

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Are a.larger

Transfer of electrons. hope it !