An attachment assembly for an aerodynamic cover includes a substantially flattened aerodynamic cover adapted to be located on a body panel with a predetermined height form the body panel; a first clip; and a second clip. The device has two circular dials rotatable with respect to one another. The invention particularly concerns the use of antisense P21 oligonucleotides, siRNA andor 2-cyano-3,12-dioxooleana-1,9-dien28-oic to attenuate such replication. Thus, the heat releasing capacity of the condenser and the radiator can be improved while simultaneously preventing leakage between the condenser and the radiator without adding complex structure. A fluorine-containing rubber composition comprising a fluorine-containing elastomer having carboxyl group andor alkoxycarbonyl group at an end of a trunk chain andor branched chain as a crosslinkable group.