划分洁净度级别检测的悬浮粒子是（）
A.≥0.5μm
B.≤0.5μm
C.≥5.0μm
D.≤5.0μm
E.≥0.3μm
参考答案：A, C
They were____aware the company was losing money. [ ]
A．very; that
B．o; which
C．fully; which
D．well; that
怀疑有腹腔脏器破裂及出血时（）
A.血气分析
B.做胸腔穿刺检查
C.做腹腔穿刺检查
D.监测中心静脉压
E.放置导尿管检查
