站立时肿块变大，平卧后肿块变小（）
A．易复性疝
B．难复性疝
C．嵌顿性疝
D．绞窄性疝
E．滑动性疝
参考答案：B
_____ the website of the Fire Department in your city, and you will learn a lot about firefighting. [ ]
A. Search
B. To search
C. Searching
D. Having searched
用友ERP-U8供应链管理的采购环节不必经过的环节是（）。
A.采购入库
B.采购到货质检
C.取得采购发票
D.采购结算
