胃镜检查常见的并发症有（）
A.低氧血症
B.肿瘤转移
C.术后腹泻
D.心跳骤停
E.食管、胃肠穿孔
参考答案：A, D, E
金瓷冠前牙切端应预备出的间隙为（）
A.0.3mm
B.0.5mm
C.1.0mm
D.1.5mm
E.2.0mm
The step in the financial statement analysis framework that includes making any appropriate adjustments to the financial statements and calculating ratios is best described as:（）
A. gathering the data.
B. reporting the conclusions.
C. processing the data.
