Within each iteration of an iterative process: a low-pass filter is applied to an actual sales volumes series to extract low frequency components representing a base sales volume series for the iteration; and a locally optimal base sales volume series is determined. The checking circuit is arranged for checking a plurality of successive data bits to be transmitted and accordingly generating a checking result. The fluorosilicone reaction product is prepared from a fluorine-containing monomer of the formula CH2\u2550CCOOYRf, and a mercapto functional organopolysiloxane. The annular space between the inner and outer tubes is in communication with the atmosphere. As a result, pumping loss of the engine is reduced which enables the speed of the engine to be increased faster, thus improving shift response. The MPN may provide a variety of functions, including time, communication, entertainment, organization, guidance, athletic, medical, travel, outdoors, identity, security, and military.