外科治疗胃十二指肠溃疡的目的是
A.防止恶变B.防止出血C.消除溃疡病灶D.防止瘢痕性幽门梗阻E.永久性地减少胃分泌胃酸和胃蛋白酶的能力
参考答案:C
面铣刀刀把安装刀片后,须调整刀尖之高度。()
31. George ___ the good chance to present his proposal to the director, and at last, it was adopted.
A.realized
B.seized
C.delivered
D.Released