— do they go to the park? —They go there by bike.[ ]
A. Where
B. What
C. How
答案:C
心电图运动试验阳性是指心肌负荷增加后出现()
A.ST段水平或下斜型压低≥0.05mV
B.ST段水平或下斜型压低≥0.1mV
C.ST段水平或下斜型压低≥0.05mV,持续0.08秒
D.ST段水平或下斜型压低≥0.1mV,持续1分钟以上
E.ST段水平或下斜型压低≥0.05mV,持续0.16秒
道岔