混悬剂系指难溶性固体药物以微粒状态分散于分散介质中形成的非均相液体制剂。()
参考答案:对
——What about lesson this morning?
——A piece of cake;it was too easy lesson for me.
A.the;the
B.a;a
C.a;the
D.the;a
下列不属于油品计量工具的是()。
A、密度计
B、温度计
C、流量计
D、压力表