The study of the sound patterns and sound systems of languages is called______.
A. phonetics
B. phonology
C. syntax
D. morphology
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在相对湿度为56%时,水不溶性药物A与B的吸湿量分别为2g和3g,A、B混合后不发生反应,则混合物的吸湿量为()
A. 2.8g
B. 8g
C. 1.5g
D. 6g
E. 5g
The novel______addresses many of the social and intellectual issues facing African-Americans in the early twentieth century, especially the black identity.
A. Invisible Man
B. I Wonder as I Wander
C. Native Son
D. Not Without Laughter
当药物本身产生的饱和蒸汽压低于环境的水蒸气分压时,将产生()
A. 吸湿
B. 风化
C. 蒸发
D. 吸附
E. 降解
下列方法中不能用于评价混悬剂质量的是()
A. 再分散试验
B. 微粒大小的测定
C. 沉降体积比的测定
D. 浊度的测定
E. 絮凝度的测定