Rot
Rot
相关考题：
下面对使用SSD.SAD.ROT技术的结论，哪项是错误的（ ）A、SAD技术，摆位要求是必须保证升床的准确B、SAD技术，机架转角的准确性和病人体位的误差都能保证射野中心轴通过肿瘤C、SSD技术，机架转角一定要准确同时注意病人的体位D、SSD技术给摆位带来方便和准确，优于SAD技术，应用越来越多E、ROT技术，是以肿瘤或靶区为中心用机架的旋转运动代替SAD技术中机架定角照射
单选题Compared to manila line,size for size, nylon line（）.Ahas less strength than manila lineBhas more strength than manila lineCis equivalent to manila lineDwill rot quicker than manila line
单选题Nylon rope is often used in the makeup of a towline because it（）.AfloatsBstretchesChandles easilyDresists rot
单选题In order to detect rot in manila lines，you should（）.Afeel the surface of the line for broken fibersBmeasure the reduction in circumference of the lineCobserve any mildew on the outer surfaceDopen the strands and examine the inner fibers
名词解释题翻身试验(roll over test，ROT)