乙酸乙烯酯乳液聚合的机理与一般乳液聚合相同。采用()为引发剂,最常用的乳化剂是()。
参考答案:过硫酸盐;聚乙烯醇
Most members of the committee were in favour of the suggestion; only a(n) _____ were against it. [ ]
A. majority
B. minority
C. quantity
D. amount
女性,58岁,突然发生心悸,胸闷,气短,心电图示:心房颤动,心室率120次/分,应首选下列哪项治疗()。
A.普罗帕酮静注
B.利多卡因静注
C.西地兰静注
D.维拉帕米静注
E.胺碘酮口服