皮皮学，免费搜题
登录
搜题
【单选题】
根据羟基蒽醌酸性不同,而进行分离的方法是A.
硅胶色谱
B.
离子交换色谱
C.
pH梯度萃取法
D.
聚酰胺色谱法
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】(16)已知各变量的类型说明如下:int i=8,k,a,b;unsigned long w=5;double x=1.42,y=5.2;则以下符合C语言语法的表达式是()。(2.0分)A. a+=a-=(b=4) * (a=3) B. a=a*3=2 C. x%(-3) D. y= float(i)
【单选题】The author indicates that Mason's brilliant leadership ability ______.
A.
was exercised throughout his life
B.
has been recognized only by the generations that followed him
C.
was less important historically than his brilliance as a lawyer
D.
emerged powerfully, but for a brief time only
【单选题】The author indicated that Mason's brilliant leadership ability ______.
A.
was exercised throughout his life
B.
had been recognized only by the generations that followed him
C.
was less important historically than his brilliance as lawyer
D.
emerged powerfully, but for a brief time only
【单选题】To their joy, the couple the house and found the missing ring.
A.
got through
B.
went through
C.
Lived through
D.
Looked through
相关题目：
参考解析：
知识点：
题目纠错 0
发布
