The second question is D
Medium-frequency X-ray machine refers to the high voltage power supply and the filament heating power supply of the operating frequency of 400Hz or more X-ray machine.
I, the main technical and configuration requirements of the equipment:
1, orthopedic C-arm X-ray machine 1
(1) high-voltage generator: maximum output power ≥ 1.4KW, high-frequency inverter frequency ≥ 30KHZ, tube voltage: 40kV ~ 110kV, mAsec ≥ 100mAs;
(2) bulb tube: focal point ≤ 0.6mm. Anode heat capacity ≥ 66kHu, fixed anode;
(3) image intensifier: 9" (23cm), variable field, center resolution ≥ 4.0Lp/mm, with 23cm and 15cm two kinds of field of view, 8/40 round filter grids, image torsion ≤ 16%;