A control section selectively executes one of a first control and a second control when the accelerator opening degree is less than a first opening degree and a switching operation is performed by a forward and reverse switching operation lever. A movable collimator mechanism capable of detecting only a collimate component of an X-ray optical flux is provided in a secondary X-ray path extending between a sample and an X-ray detector. To perform the verify processing and the compare processing simultaneously, a recording quality storage part is provided in the recordingreproducing device, and reproduced data is transmitted to a host controller while storing quality information at the time of reproduction by an instruction of the host controller. An object is generated that includes a representation of the access count and an age since registration for each domain names. Each metal web comprises a top connector end fixed to the bearing extension, a bottom connector end fixed to the bottom chord, and a structural arm between the connector ends.