温度越高,分子的热运动平均动能就越低。
参考答案:错
—Why did______ take you almost two hours to come here?
—There was a terrible traffic jam. [ ]
A. that
B. it
C. she
D. this
高血压急症是指短时期内血压重度升高,并伴有心、脑、肾及眼底的严重功能障碍,其舒张压和(或)收缩压为()。
A.>130mmHg;不变
B.≥100mmHg;≥180mmHg
C.>130mmHg;>200mmHg
D.不变;>200mmHg
E.以上均不准确