通用的测量工具及测试仪器（如游标卡尺、螺旋测微器、扭力扳手、缸压油压表等量具）需委托有资质的鉴定机构进行至少每半年一次的校验。（）
参考答案：对
A parent reports that his 2-year-old child often fails when running. The nurse interprets this as indicating which of the following as a normal aspect of a toddler’s vision
A. Near-sightedness.B. Far-sightedness.C. Binocular vision.D. Strabismus.
充油设备渗漏率按密封点不能超过0.01%。
