工件以平面定位时,其基准位移误差是由定位表面的()引起的。
A.平面度
B.表面粗糙度
C.位置误差
D.波度
参考答案:A
Which of the following would the nurse interpret as indicating that a child is receiving too much intravenous fluid too rapidly
A. Marked increase in abdominal girth.B. Evidence of protein in the urine.C. Dark amber colored urine.D. Moist crackles in the lung fields.
时间跨度通常为3年及3年以上,用于规划新产品、资本支出、生产设备安装和添置及研究与发展的预测。()
A.短期预测
B.中期预测
C.长期预测