皮皮学，免费搜题
登录
搜题
【单选题】
紫外光谱法测定盐酸氯丙嗪注射液的含量,选择299nm测定波长,原因是( )。A.
为了排除其氧化产物的影响
B.
299 nm处是它的最大吸收波长
C.
在299 nm处,它的吸收值最稳定
D.
为了排除抗氧剂的干扰
E.
在299 nm处测定误差最小
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】当事人变更合同应具备以下四个条件:
【简答题】Why was the League superseded by the UN?
【单选题】Why was the UN divided into distinct bodies?
A.
To protect the rights of small nations.
B.
For conveniences.
C.
To serve different functions.
D.
To serve for different chairmen.
【简答题】影响塑料制品尺寸精度的因素有哪些？
【简答题】设某教学数据库有三个基本表: 学生S(S#,SNAME,AGE,)、课程C(C#,CNAME,TEACHER)、选修SC(S#,C#,GRADE) 1.用SQL语句完成:检索WANG同学不学的课程号。 2.写出关系代数表达式∏ C#,CNAME (C∞(π S#,C# (SC)÷π S# (S)))的汉语含义。 3.用SQL语句完成:创建关于男同学的学号、姓名和年龄的视图View1(S#,S...
【单选题】Why was Douglas called the 'Little Giant'?
A.
Because he felt strongly about slavery.
B.
Because he was defeated by Lincoln for President.
C.
Because he was short in stature but strong in frame.
D.
Because his head was larger than his shoulders.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
