关于慢性心功能不全的血流动力学特点的说法错误的是()
A.心排血量减少
B.周围血管扩张
C.肺静脉压升高
D.体静脉压升高
E.肺或(和)体循环静脉瘀血
参考答案:B
一个正方体木块的棱长为a厘米,把它锯成两个长方体,这两个长方体的棱长总和是( )厘米,表面积总和是( )平方厘米.
A.24a6a2
B.20a8a2
C.12a7a2
D.24a7a2
— 2008 is drawing near. Any changes in Beijing?
— Yes, more stadiums arc being built, and ______ people are learning English. [ ]
A. more and more
B. the more and the more
C. the more and more
D. more and the more