One of the shortcomings of direct marketing is that the firm cannot easily measure the response.
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A Gantt chart helps in （）, （）, and （） specific tasks and resources in a project.
A. scheduling
B. managing
C. monitoring
小儿中度脱水ORS补液需多长时间内补完
A. 2~4小时
B. 3~5小时
C. 4~6小时
D. 5~6小时
E. 6小时以上
小儿中度脱水ORS补液量是多少
A. 50~60ml/kg
B. 60~80ml/kg
C. 80~100ml/kg
D. 100~110ml/kg
E. 100~120ml/kg
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