某企业的生产设备只有出现故障时才进行维护,这种维护属于()。
A.计划性维护
B.应急性维护
C.预防性维护
D.其他都不是
参考答案:B
David, a hyperkinetic 5-year-old, exhibits signs of extreme restlessness, short attention span, and impulsiveness. In order to alter the child’s milieu that would likely be most therapeutic for him, what could the nurse do
A. Define behaviors of the child that will be acceptable and those that will be unacceptable.B. Allow the child freedom to choose activities in which to participate and other children with whom to associate.C. Increase the child’s sensory stimulation and activity.D. Limit the child’s opportunities to display anger and frustration.
与绿色消费相关的大型主题活动有哪些?