Sedum \u2018Black Jack\u2019 is a new and distinct plant cultivar of Stonecrop having large dark-mahogany leaves with stiff upright stems and long-lasting wine-colored flowers valuable for landscaping, potted plant, or cut flower. The LFM waveform is sent from an aircraft or satellite and is received by a transponder. The host controller arranges queue element transfer descriptors in a circularly linked order. First and second modulator units are configured to generate the control signals which are modulated such that a time average value of each control signal corresponds to the value of a corresponding input signal of the respective sigma-delta modulator. When the bit is 1, the terminal opens the port. The discharge guide tubes include cylindrical portions having a predetermined height, and intercepting portions extended from the bottom ends of the cylindrical portions by a predetermined length, for preventing the air supplied to the secondary cyclones from being directly discharged to the discharge guide tubes.