A plurality of selectable memory devices is available for booting a computer processor. The lower articular portion may be configured to cooperate with the upper articular portion to provide articulating motion to the upper and lower vertebrae. With the two ends of each LED being connected in parallel with the voltage-equalizing resistance, the end voltage of each light-emitting unit can be evenly stabilized; and the current-limiting resistance connected in series between the connection joints of the LED and the voltage-limiting unit for limiting the shunt current passing through the voltage-limiting unit. When installing the fuel supply manifold assembly at a fuel cell site, one inlet connection for each fuel source and one outlet connection is required. A data structure representing possible segmentations of the compounded text is generated based on whether words in the possible segmentations occur in the electronic dictionary.