A resonant circuit includes a plurality of cables, each of which including: an outer conductor made of a conductive material in a cylindrical manner; an inner conductor, made of a conductive material in an elongated manner, and disposed inside of the outer conductor; and an insulator disposed between the outer conductor and the inner conductor. The shaft includes a body portion and a resisting portion. Intermediate nodes in a crosstalk fault model path to an observation point can also be determined andor sensitized. , c) adding a precipitating agent with an active constituent content of 2-10 equivalents per liter, preferably 4-8 equivalents per liter, to the mixture, and the molar ratio FeAl to precipitating agent is 20%-80% of the stoichiometric amount, d) then oxidizing the precipitated suspension with an oxidizing agent at an oxidation rate of 2-50 mole %hr. The first locking mechanism is placed in a locked position and the second locking mechanism is placed in an unlocked position to allow the first and second sectional ramps to be coupled together and moved from the stored position to the deployed position through the first door.