（二）在铁路、城市轨道交通线路上放置障碍物，或者故意向列车投掷物品的；
Advantages and disadvantages of the AMD Am386As much as Intel tried to paint AMD’s Am386 as a second-rate CPU, it wasn’t. AMD released it at speeds ranging from 20 MHz to 40 MHz, and both SX (16-bit externally) and DX (fully 32-bit) versions. By 1991, the 16 MHz 386 was obsolete. Running at the same clock rate, AMD’s version of the 386 had essentially identical performance to the Intel original.
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Never the primary choice, but some are frequently recommended as alternatives.