空气中的水蒸汽含量与空气的()有关。
A、分子量
B、湿度
C、温度
D、密度
参考答案:C
四环素的有效血浓度维持约多少小时?()
A.4~6
B.8~10
C.12~14
D.16~18
E.20~22
A client complains of a severe, throbbing headache following a lumbar puncture. The priority nursing intervention for this client is to
A.restrict fluid intake.
B.increase fluid intake.
C.raise the head of the bed.
D.assess vital signs.