A.The epidemic has been brought under control.
B.There are signs of progress in the peace process.
C.Great improvements are being made in its capital.
D.There's little hope of bringing the conflict to an end.
第5题
盐酸四环素在碱性条件下易降解生成
A.差向四环素
B.脱水四环素
C.差向脱水四环素
D.异四环素
E.金霉素
第6题
中国药典(2000年版)规定盐酸四环素中杂质吸收度的检查,检查的杂质是指
A.碱性降解物
B.酸性降解物
C.四环素
D.金霉素
E.差向脱水四环素
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