在等差数列{an}中,an>0,且a1+a3+a8=a24,则a3S10的最大值是( )。
Zhang Heng, one of _____ best-known Chinese astronomers, showed a strong interest in _____ astronomy as a child.
A.the; the
B.the; 不填
C.不填; the
D.不填; 不填
男性,50岁,收缩压21.6kPa(162mmHg),舒张压12.8kPa(96mmHg),血脂偏高,劳累后感到心前区疼痛,休息后可缓解,心电图检查 T波低平
血压计袖带下缘距肘横纹的距离是
A.0.5~1cmB.1.5cmC.2~3cmD.4~5cmE.6cm