体外循环中对红细胞破坏最明显因素是()
A.低温
B.泵负压吸引
C.高流量
D.高氧
E.药物
参考答案:B
Although human evolution has _______ in the past 10,000 years, we are changing our environment faster still.
A.linked up
B.loaded up
C.sped up
D.split up
矮桩式水尺两相邻桩顶的高差宜为0.4~()m。
A、0.7
B、0.8
C、0.9
D、1.0