A friction regenerative pump of this invention comprises: a partition portion formed in a section from a high-pressure outlet to a low-pressure intake along an impeller rotation direction; and a tongue portion provided in the partition portion such that it is elastically deformable. The test apparatus includes a test plate capacitively couple to the signal terminals of the integrated circuit. The panel can include contiguous sections inner surfaces of which can be oriented within twenty-five degrees of parallel to said mounting surface. The canting member has portions that cant relative to one another. The method can simplify the signaling interaction between the network entities, reduce the network complexity and save the network resources.