药物与含量测定:硫酸庆大霉素().
A.汞量法
B.硫酸汞盐法
C.高效液相色谱法
D.气相色谱法
E.抗生素微生物检定法
参考答案:E
---- What’s that noise?
---- Oh, I forgot to tell you. The new machine ______.
A.was tested
B.will be tested
C.is being tested
D.has been tested
哥本哈根世界气候大会全称是什么?