肺纹理主要由哪种组织结构构成（）
A.支气管
B.肺静脉
C.肺动脉
D.淋巴管
E.肺泡壁
参考答案：C
Can you guess if they ________ to play basketball with us ? I think they’ll come if they _______ free .
A．come, are
B．will come , will be
C．will come , are
D．come , will be
肌钙蛋白测定在决定限的不精密度应小于（）
A.3.0%
B.5.0%
C.5.6%
D.9.2%
E.10.0%
