游离皮片移植失败的常见原因是()
A.缝合不严密
B.皮片下有血肿
C.加压包扎压力过大或过小
D.游离皮片取得太薄
E.患者有贫血,血色素低于9g
参考答案:B
——The captain did not leave the sinking ship till the last moment.
——So he was the last man ______ the ship.
A.left
B.leaving
C.to leave
D.to be leaving
然今卒困于此卒: