一个不透明的盒子里装了红、黑、白玻璃球各2个,要保证取出的玻璃球三种颜色都有,他应保证至少取出( )个;要使取出的玻璃球中至少有两种颜色,至少应取出( )个。
5;3
如图所示,有一正方形闭合线圈,在足够大的匀强磁场中运动。下列四个图中能产生感应电流的是
A.图甲
B.图乙
C.图丙
D.图丁
When caring for a client with ulcerative colitis, the nurse should include which of the following nursing interventions in the plan of care()
A. Encouraging the use of stool softeners.
B. Suggesting sitz baths as needed.
C. Arrange for the client to have a private bathroom.
D. Wearing a gown to provide direct care.