logo - 刷刷题
下载APP
【单选题】

()是水基压裂液中的一种重要添加剂,其主要作用是使压裂液中的冻胶发生化学降解,有助于压后返排。

A.
破胶剂
B.
破乳剂
C.
交联剂
D.
稳定剂
题目标签:冻胶添加剂降解
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】药物稳定与否的根本原因在于自身的化学结构,外界因素则是引起的条件,影响药物制剂降解的外界因素主要有

A.
水分、氧、金属离子和光线
B.
pH值与温度
C.
溶剂介电常数及电子强度
D.
赋型剂或附加剂的影响
E.
以上都对

【单选题】Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food.Fergus Clydesdale, head of the department of food science and nutrition at the University of Massac...

A.
They overlook the risks of the food they eat.
B.
They overestimate the hazards of their food.
C.
They are overoptimistic about the safety of their food.
D.
They overstate the government's interference with the food industry.

【单选题】酚类药物降解的主要途径是()

A.
水解
B.
光学异构化
C.
氧化
D.
聚合
E.
脱羧

【多选题】下列属于食品添加剂的是()。

A.
防腐剂
B.
酸味剂
C.
漂白剂
D.
凝固剂
相关题目:
【单选题】药物稳定与否的根本原因在于自身的化学结构,外界因素则是引起的条件,影响药物制剂降解的外界因素主要有
A.
水分、氧、金属离子和光线
B.
pH值与温度
C.
溶剂介电常数及电子强度
D.
赋型剂或附加剂的影响
E.
以上都对
【单选题】Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food.Fergus Clydesdale, head of the department of food science and nutrition at the University of Massac...
A.
They overlook the risks of the food they eat.
B.
They overestimate the hazards of their food.
C.
They are overoptimistic about the safety of their food.
D.
They overstate the government's interference with the food industry.
【单选题】酚类药物降解的主要途径是()
A.
水解
B.
光学异构化
C.
氧化
D.
聚合
E.
脱羧
【单选题】难降解的有毒物质沿食物链传递,其浓度将
A.
维持恒定
B.
产生波动
C.
逐级降低
D.
逐级升高
【多选题】下列属于食品添加剂的是()。
A.
防腐剂
B.
酸味剂
C.
漂白剂
D.
凝固剂