气动试压泵的危险源除有各个高压连接管线、高压阀门外，还有什么？
参考答案：气动试压泵的危险源除有各个高压连接管线、高压阀门外，还有气缸。
—Do you know the boy ____ is playing soccer there?
—Certainly, he is a friend of my _____
A．who; brother’s
B．who; brother
C．whom; brother’s
D．whose; brother
华支睾吸虫病最常见的并发症有()
A.胰腺炎
B.急、慢性胆囊炎
C.胆石症
D.胆管炎
E.肝细胞癌
