【单选题】商品经济产生和存在的决定性条件是存在( )
【判断题】In assessing training needs, an examination of production efficiency, labor costs, turnover, and accidents would be part of task training needs analysis.
【简答题】Previewing Task for Session 4.docx proof reading_sound training.mp3:
【单选题】桥梁支座各部位应保持清洁、完整,每 至少清洁一次。
【多选题】The development of a training program for any task requires managers to:
A.
Determine how the task is to be done
B.
Plan the training session
C.
Present the training session
D.
Evaluate the session's effectiveness
E.
Retrain at the proper interval
【单选题】Task 2-1 How long does the docent training program last?
【单选题】盐酸去氧肾上腺素(C9H13NO2·HCl=203.67)含量测定:精密称取本品0.1129g,置碘量瓶中,加水溶解后精密加入溴滴定液(0.1mol/L)50m1,加盐酸5ml,密塞,放置15分钟,加碘化钾试液10ml,密塞,充分振摇后用硫代硫酸钠滴定液(0.1015mol/L)滴定至终点,消耗硫代硫酸钠滴定液15.33ml,空白滴定消耗硫代硫酸钠滴定液48.25ml,计算样品的百分含量为