影响能见度的因素有()。①大气透明度②物标和背景的亮度③人的视觉感应能力
A、①②
B、①③
C、②③
D、①②③
参考答案:D
关于鳞状毛囊角化病正确的是()
A.冬季加重,夏季减轻
B.一般无自觉症状
C.好发于青壮年
D.有时有家族史
E.以上均正确
A client exhibits confusion and severe memory loss. At 11:30 AM, he tells the nurse that he is going to work and proceeds to walk toward the door. Which of the following actions should be the nurse take
A.Remind him that he retired from his job 10 years ago.
B.Tell him that she'll accompany him for a short walk outdoors.
C.Divert his attention toward the dining room where lunch is being served.
D.Tell him that he does not have to go to work today.