下列哪一项不是影响CVP测定值的因素()
A.胸膜腔内压
B.导管位置
C.穿刺部位
D.标准零点
E.测压系统的通畅度
参考答案:C
—Tomorrow ____ my birthday. I’d like you and Jane to come.
—I’m not sure if she ____ free.
A.will be; is
B.is going to; is
C.is; is
D.is; will be
注浆站的形式有哪些?各适用于什么条件?