There is provided an inspection method capable of classifying defects detected on a production layer of a specimen. Other methods of processing broadcast messages include: receiving a first broadcast message on a first subnet; determining whether the first broadcast message originated in the first subnet; and when the first broadcast message originated in the first subnet, sending the first broadcast message to a second subnet. A pair of slideways is defined in the side plates. The reaction chamber is operatively connected to the sample loading chamber. Grounded tap regions contacting an underlying well are placed contiguous to source regions and reduce distributed backgate resistance, lower backgate channel modulation, and lower output conductance. According to the present invention, when the primary system is replaced by the redundant system in the network equipment, the reliability of inputting a clock signal to corresponding interfaces of the network equipment can still be ensured, and thus the network equipment can satisfy performance requirement of telecommunication equipment.