普萘洛尔与硝酸甘油合用的优点不包括()
A. 普萘洛尔可取消硝酸甘油引起的反射性心率加快
B. 协同降低心肌耗氧量
C. 侧支血流量增加
D. 心内外膜血流比例降低
胆矾中铜含量测定结果,若保留四位有效数字,错误的是:( )
A. 25.3442%---25.34%
B. 25.3350%---25.34%
C. 25.4450%---25.45%
D. 25.4451%--25.45%
联省自治是一场地方保守主义革命。
A. 对
B. 错
What are transitional devices?
A. The words or phrases used to link parts of the paper
B. The last word in the paragraph
C. The first sentence in the paragraph
D. The last sentence in the paragraph