The utility model provides a standing-wave electronic linear accelerator, and a double-channel rapid container/vehicle inspection system, a vehicle movable type container/vehicle inspection system, and a combined movable type container/vehicle inspection system which are equipped with the same. The linear accelerator comprises a modulator and a magnetron which are used for generating radio frequency microwave, a plurality of accelerating tubes for accelerating electrons, a microwave transmission system for microwave to be fed into the plurality of accelerating tubes, a plurality of electronic guns for emitting electron beams to the plurality of accelerating tubes, a plurality of targets hit by the electrons from a plurality of accelerators and generating X-rays of continuous spectrums, and a plurality of shielding devices for shielding the X-rays of continuous spectrums generated by the targets. A microwave distributor is arranged near the bottom end of the microwave transmission system, and the microwave distributor, for the microwave in the microwave transmission system to branch each accelerating tube, comprises a microwave inlet and a plurality of microwave outlets.