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【单选题】
男，26岁。因腹部外伤急诊入院，行剖腹探查，见肝右叶8cm长裂口，较深，有不易控制的动脉性出血。术中最有效的止血方法是A.
用纱布或绷带条压迫止血
B.
全身和局部同时应用止血药物
C.
填塞大网膜后缝合裂口
D.
阻断肝门血流后止血
E.
明胶海绵或氧化纤维填入裂口
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举一反三
【简答题】I came _______ my house two days ago . [ ] A back on B back to C to back D back
【单选题】I came _______ my house two days ago . A back on B back to C to back D back
A.
back on
B.
back to
C.
to back
D.
back
【单选题】It was too late to ______ of the contract.
A.
back out
B.
back down
C.
back up
D.
back away
【简答题】A went back B．returned back C． went back to D． returned back to17． A went back B．returned back C． went back to D． returned back to
【单选题】He ________ in three days. A. coming back B. came back C. will come back D. is going to coming back
A.
coming back
B.
came back
C.
will come back
D.
is going to coming back
【简答题】back-to-back credit
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