在较高的抽象层次上,传统的程序流程图与UML中活动图最根本的区别在于 (17) 。
A. 程序流程图明确地指定了每个活动的先后顺序,而活动图仅描述了活动和必要的工作顺序
B. 活动图不能提供循环控制结构,而程序流程图提供
C. 活动图不能表示并发活动,而程序流程图可以表示并发活动
D. 两者采用不同的图形符号系统
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护士的特殊干涉权只有在人体实验性、______、必要的行动控制、病人拒绝治疗的范围内才能生效。
护理伦理学的学习方法中,目前比较提倡的是______。
Children who grip their pens too close to the writing point are likely to be at a disadvantage in examinations, (31) to the first serious investigation into the way in which writing technique can dramatically affect educational achievement.The survey of 643 children and adults, ranking from pre-school to 40-plus, also suggests (32) pen-holding techniques have deteriorated sharply over one generation, with teachers now paying far (33) attention to correct pen grip and handwriting style.Stephanie Thomas, a learning support teacher (34) findings have been published, was inspired to investigate this area (35) he noticed that those students who had the most trouble with spelling (36) had a poor pen grip. While Mr. Thomas could not establish a significant statistical link (37) pen-holding style and accuracy in spelling, he (38) find huge differences in technique between the young children and the mature adults, and a definite (39) between near-point gripping and slow, illegible writing.People who (40) their pens at the writing point also show other characteristics (41) inhibit learning, (42) as poor posture, leaning too (43) to the desk, using four fingers to grip the pen (44) than three, and clumsy positioning of the thumb (which can obscure (45) is being written).Mr. Thomas believes that the (46) between elder and younger writers is (47) too dramatic to be accounted for simply by the possibility that people get better at writing as they grow (48) . He attributes it to a failure to teach the most effective methods, pointing out that the differences between (49) groups coincides with the abandonment of formal handwriting instruction in classrooms in the sixties. "The 30-year-old showed a huge diversity of grips, (50) the over 40s group all had a uniform ’tripod’ grip. \ 50().