59.下列治療機器若按照放射治療射束所使用能量，由低至高排列，其順序應為何？①supervoltage therapy machine ②Grenz-ray therapy machine ③superficial therapy machine④orthovoltage therapy machine ⑤megavoltage therapy machine (A)②③④①⑤ (B)②①④③⑤ (C)②④①③⑤ (D)①②④③⑤