对疼痛患者进行护理时,正确的描述是
A.止痛药首选麻醉性止痛药B.只使用非药物性止痛C.疼痛出现后给止痛药D.立即用药物止痛E.止痛药开始宜较大剂量
参考答案:E
They find themselves surrounded by colorful rocks, fishes, seashells and plants, all ____ slowly in the blue water.
A.waving and moving
B.waved and moved
C.waved and moving
D.waving and moved
木炭、氧化铜、铁粉都是黑色粉末,鉴别它们最理想的试剂是下列物质中的 [ ]
A.硫酸铜溶液
B.水
C.稀硫酸
D.氢氧化钠溶液