下列哪一种阑尾炎最易引起穿孔()。
A.急性单纯性阑尾炎
B.急性蜂窝织炎性阑尾炎
C.急性坏疽性阑尾炎
D.慢性阑尾炎急性发作
E.慢性阑尾炎
参考答案:C
—Li Na won the tennis championship in the French Open on June 4, 2011.
—We take pride in her. She is the first Asian professional tennis player to win it.
A.are interested in
B.are terrified of
C.are proud of
D.are used to
对脑血管自动调节影响不大()
A.平均动脉压50~55mmHg
B.平均动脉压30~40mmHg
C.脑灌注压低于60mmHg
D.低脑灌注压时,还可维护良好的脑氧代谢率
E.交感神经兴奋