彩超检查见移植肾周围出现无回声包块，最容易诊断的是（）
A.尿液囊肿
B.淋巴囊肿
C.吻合口动脉瘤
D.血肿
E.脓肿
参考答案：C
You thought he was an honest man, ______? [ ]
A. didn't you
B. wasn't you
C. wasn't he
D. didn't he
红外测温仪一般由（）、存储单元等组成。
A.光学系统
B.光电探测器
C.信号放大及处理系统
D.显示和输出
