The American Congress has all the following power EXCEPT
A. investigating and overseeing executive branch and its agencies.
B. making federal laws.
C. defining two-chamber system.
D. appointing the judges of the Supreme Court.
下列软膏剂基质中属于类脂类基质的是
A. 凡士林
B. 羊毛脂
C. 石蜡
D. 麻油
E. 硅酮
Firth used______to illustrate the close relationship between language use and its co-occurrence factors.
A. context
B. register
C. implicature
D. reference
制备固体分散体时，若药物溶解于熔融的载体中呈分子状态分散者是
A. 简单低共熔混合物
B. 共沉淀物
C. 固态溶液
D. 无定形物
E. 玻璃溶液
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