Surface areas on walls, under loose woodwork, between bricks and around other bat entryways often have a smooth, polished appearance. The stained area is slightly sticky, may contain a few bat hairs, and is yellowbrown to blackish brown in color.
cross connections What is a Cross Connection? A cross connection is a point in a plumbing system where the potable water supply is con-nected to a non-potable source. Briefly, a cross connection exists whenever the drinking water system is or could be connected to any non-potable source (plumbing fixture, equipment used in any plumbing system).
What is a cross-guide coupler? A: A cross-guide coupler is a microwave component that carries microwaves along two hollow metallic forms arranged in the shape of a cross. They are a kind of waveguide, which is a device that directs microwave energy the way wires transmit conventional forms of electrical current. Continue Reading.