由难溶性固体药物以固体微粒状态分散在液体分散介质中形成的多项分散体系是()。
A.低分子溶液剂
B.高分子溶液剂
C.溶胶剂
D.乳剂
E.混悬剂
参考答案:E
Compared with his classmates, he is unfortunate to have his house__________. [ ]
A. burnt to the ground
B. rebuilt up
C. painted well
D. run out of
抽油机井正常生产时,井口装置中全开的阀有:()、生产一次阀、回压阀。
A、生产总阀
B、热洗阀
C、清蜡阀
D、掺水阀