Embodiments of nanoelectronic sensors are described, including sensors for detecting analytes inorganic gases, organic vapors, biomolecules, viruses and the like. The device includes a vertical back plate, curved in the middle to create an obtuse angle to partially surround a drop hitch ball in order to guide the tongue of a trailer toward the ball hitch. , introductory level stopwords and advanced level stopwords, in a document, e. One connection part is connected to a housing. Methods of making and using the baits are also disclosed.