钢铁工业绿色化中的“3R”思相想是指()、()和()
参考答案:减量化;再利用;再循环
The zoo worker told the visitors that in the case of a highly ______ animal, performance training is easy
and not so painstaking. [ ]
A. intelligent
B. interactive
C. internal
D. initial
作为包合物中主分子的是
A.微球B.TDDSC.磷脂与胆固醇D.复合乳剂E.β-CD