Why American scientists are developing these maps
A. To estimate the extreme weather.
B. To develop the satellite technology.
C. To improve agricultural output.
D. To learn how to change information to maps more efficiently.
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What is the author's attitude toward the claims made by advocates of health foods
A. very enthusiastic.
B. somewhat favorable.
C. neutral.
D. skeptical.
微粒分散体系中微粒的动力学性质表现在
A. 丁泽尔现象
B. 布朗运动
C. 电泳
D. 微粒的双电层结构
E. 微粒的大小
The chairman moved that the meeting ______ after dinner.
A. is continued
B. will be continued
C. be continued
D. continuing
下列关于凝胶剂叙述不正确的是
A. 凝胶剂是指药物与适宜辅料制成的均一、混悬或乳状液型的乳胶稠厚液体或半固体制剂
B. 凝胶剂有单相分散系统和双相分散系统
C. 氢氧化铝凝胶为单相凝胶系统
D. 卡波姆在水中分散形成浑浊的酸性溶液
E. 卡波姆在水中分散形成浑浊的酸性溶液必须加入NaOH中和，才形成凝胶荆
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