甲醛法测定硫酸铵中氮含量,其25%的甲醛溶液需()。
A.中和
B.氧化
C.还原
参考答案:A
-_______ busy schoolwork, the children also have to take arts, music and sports classes in their free time.
-I wonder what they will become.[ ]
A. Rather than
B. Owing to
C. Apart from
D. Except for
患者男性,20岁,因“发作性意识不清、肢体抽搐1年”入院。无发热、头痛等。既往身体健康。查体未见异常。
提示:颅脑CT:右侧额叶皮质下直径约1cm类圆形高密度影;MRI:T1加权像呈等信号,在T2加权像及注射对比剂后呈高信号,病灶内有混杂低信号,病灶周围有环形低信号带。此时可选择的诊疗方法有()
A.抗癫痫
B.止血治疗
C.脱水
D.影像导航下手术切除术
E.放射治疗
F.伽马刀放射外科治疗