胆总管空肠吻合术适应证()
A.单纯胆管结石
B.胆总管下端梗阻,且难以用手术方法解除
C.慢性胆囊炎
D.胆石嵌顿壶腹部
E.急性化脓性胆囊炎
参考答案:B
翻模施工有何基本安全要求?
There is another thing I want to let you know. The lighting in the hold is very poor, even()dark to work the cargo.
A.if
B.very
C.too
D.very much