通道口防护应设防护棚,防护棚应为不薄于5cm厚的木板或两道相距( )的竹笆。两侧应沿栏杆架用密目式安全网封闭。
A.35cmB.40cmC.45cmD.50cm
参考答案:D
The nurse is caring for a 45-year-old male client admitted with a retinal detachment in his left eye. What symptoms would the nurse expect to find during assessment ?()
A.Flashing lights in the visual field.
B.Sudden eye pain.
C.Loss of color vision.
D.Colored halos around lights.
砂砾石地基处理主要解决什么问题?有哪些处理方法?其优缺点和适用条件是什么?