下列试剂中所含有的杂质含量最高的是()
A.分析纯
B.化学纯
C.光谱纯
D.优级纯
E.色谱纯
参考答案:B
Much as be_________he has a good command of English,he sometimes feels it hard to find an
appropriate version for some Chinese idioms. [ ]
A. announces
B. claims
C. declares
D. confirms
60岁甲亢病人,甲状腺Ⅲ°肿大,高代谢症状严重,肝、肾功能正常。首选的治疗措施为()
A.立即手术
B.立即131I治疗
C.复方碘溶液治疗2周后手术
D.抗甲状腺药物控制症状后手术
E.抗甲状腺药物长期治疗