目视II级试卷.docVIP

YHT 目视Ⅱ级考试试卷 VT Level ⅡExamination （Multiple choice多项选择题） 应试人姓名Candidate 考试日期Date 考试地点Address 得分Grading 主考人Examiner 阅卷日期Date 1. Equation among wavelength λ，frequency f and wave velocity C is： 波长（λ）、频率（f）和波速（C）之间的关系为 A. λ = f×C B. λ = f÷C C. λ = C÷f D. f = C×λ 2. Which situation of the following objects can not be ensured on inspection in general？ 目视检验通常不用于确定下列物体哪些情况Condition and shape of work-piece surface 工件表面状态、形状配合面的对准Leakage trace 泄漏痕迹icrocosmic imperfection of material 材料的微观缺陷illuminance is： 发光强度的单位是 A lumen 流明 B candela 烛光 C lux 勒克斯 D decibel 分贝 4. Which factor should be considered for choosing measure when visual testing？ 目视检测时，选用量具应考虑因素为： A Measure function 量具功能 B Measure precision 量具精确度 C Measurement range 量具度量范围 D all of the above 以上全是 5. The visual test is classified as two types. What are the two types？ 目视检测分为二种检测技术A Direct visual test and long-distance visual test 直接目视检测和远距离目视检测B Direct visual test and lens test 直接目视检测和透镜检测　C Optical fiber test and long-distance visual test 光纤检测和远距离目视检测D Direct visual test and indirect visual test 直接目视检测和间接目视检测When someone goes from a place where is bright to another place where is dark，his pupil will： 当人从光线明亮处进入暗处时，瞳孔会A minify 缩小B magnify 扩大C be invariable 不变 　　D A，B and C all may be right 以上均可Which answer is the distance of distinct vision from 100mm to ∞？The distance of distinct vision is a distance between eyes and an object in which a normal man’s eyes are not tensional and not tired easily when observes a object.； 人眼的调节范围从无穷远到100mm，当目的物与眼睛的距离是时，正常人的眼睛不处于紧张状态，这时眼睛观察物体不易疲劳，这个距离称为明视距离。A 250mm B 400mm C 150mm Ｄ500mm 8. When an object and its image are o