下列哪项指标属相对比
A.各类死因百分比
B.变异系数
C.绝对增长量
D.死因顺位
E.年龄构成比
参考答案:B
— I'll do the washing-up. Jack, would you please do the floors?
— ___. [ ]
A. Yes, please
B. No, I don't
C. Yes, sure
D. No, not at all
僵蚕治痰核、瘰疬是取其什么功效()
A.息风止痉
B.祛风止痛
C.化痰
D.通络止痛
E.软坚散结