【单选题】下列关于凝胶剂的叙述错误的是()。
A.
凝胶剂是指药物与适宜的辅料制成的均一、混悬或乳状液型的稠厚液体或半固体制剂
D.
卡波沫在水中分散形成浑浊的酸性溶液,必须加入碱中和,才能形成凝胶
【多选题】评定钢材冷弯性能的指标有( )。
C.
弯曲压头直径对试件厚度(或直径)的比值D/a
【简答题】“fashion” means “clothes” For most people,the word “fashion” means “clothes”。 But people may ask the question,“What clothes are in fashion?”And they use the adjective “fashionable” in the same way: “S...
【单选题】下列哪一项会导致某种商品需求曲线向左移动
【判断题】无论制动鼓正向还是反向旋转时,领从蹄式制动器的前蹄都是领蹄,从蹄都是从蹄。( )
【简答题】For most people,the word “fashion” means “clothes”。 But people may ask the question,“What clothes are in fashion?”And they use the adjective “fashionable” in the same way: “She was wearing a fashionab...
【判断题】领从蹄式制动器制动时,无论制动鼓正转还是反转,其前蹄都是领蹄,后蹄都是从蹄。