现有10个数，它们能构成一个以1为首项，-3为公比的等比数列，若从这10个数中随机抽取一个数，则它小于8的概率是（ ）。
护理咯血窒息患者的第一步骤是（）
A.解除呼吸道阻塞
B.加压给氧
C.使用呼吸兴奋剂
D.输血
E.口对口人工呼吸
（75） involves comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance. These other projects can be within the performing organization or outside of it, and can be within the same or in another application area.
A．Metrics
B．Measurement
C．Benchmarking
D．Baseline
