Techniques for operating, testing, and generating a testing report for the electrical and air subsystems of a vehicular trailer, without the use of an associated truck tractor are disclosed. Measuring instruments are attached to an object under observation. The invention also concerns a device for implementing said method for in vitro detection of the bacterium in fleas or human samples. The first connector and the second connector link with each other when the base board is slid in a direction, and go away from each other when the base board is slid in the opposite direction. The TXQ is further capable of indicating that the exception was associated with a host virtual address derived from a guest page frame real address or a guest segment frame absolute address.