血清钾浓度大于（）mmol/L称高钾血症（）
A.3.5
B.4
C.4.5
D.5
E.5.5
参考答案：E
Which of the following techniques is appropriate for irrigating an adult client’s ear to move cerumen
A. After instilling the solution, pack the ear canal tightly with cotton pledgets.B. Allow the irrigating solution to run down the wall of the ear canal.C. The irrigating solution should be cool.D. Use sterile solution and equipment.
蒸塔时，塔底液面计放空阀应该关闭。（）
