压疮创面有感染可选用下列哪种溶液清洗()
A.50%乙醇
B.0.1%苯扎不溴胺
C.1:2500呋喃西林
D.0.9%氯化钠
参考答案:D
I’m going to buy everything I need. [ ]
A. who
B. that
C. where
D. which
用过量的H2SO4、NaOH、NH3•H2O、NaCl等溶液,按图示步骤分开五种离子,则溶液①④是( )
A.①NH3•H2O ④NaCl
B.①NaCl ④H2SO4
C.①NaOH ④H2SO4
D.①H2SO4④NaCl