我国最早记录小孔成像的古书是______.
在我国古书《墨经》中记载了世界上最早的“小孔成像实验”.
故答案为:《墨经》
中心静脉压1.7kPa(16cmH2O),血压低,为()。
A.血容量不足
B.心功能不全
C.补液量已足
D.急性肾功能衰竭
E.高渗性脱水
Many people in Haiti died from the earthquake because they didn’t have to immediate rescue.
A.access
B.admission
C.approach
D.attention