控制犬肌肉骨骼病所致的疼痛和炎症,且仅用于犬的解热镇痛药是()
A.替泊沙林
B.氨基比林
C.头孢噻呋
D.氟尼新葡甲胺
E.阿司匹林
参考答案:A
China ________ rapid economic development and political stability over the past three decades, but with them ________ some social problems.
A.has seen; has come
B.had seen; are coming
C.saw; will come
D.has seen; have come
在一般的废水处理过程中,除磷脱氮主要在( )中完成。
A.一级处理
B.二级处理
C.三级处理
D.四级处理