如何退出套管捞矛？
参考答案：
1.上提钻具会有压力
2.猛放钻具，使钻具突然之间有个震动。
3.用链钳正转一到两圈。
When he_ _____to the cinema, the film ______for half an hour. [ ]
A. got; had begun
B. got; had been on
C. had got; was on
D. had got; had been on
王某，男，45岁，患十二指肠溃疡，突然呕血，面色苍白，脉搏120次/分，血压8/6kPa (60/45mmHg)。医嘱：输血400ml。
为病人输两袋血之间应输入少量( )。
A．5%葡萄糖溶液
B．5%葡萄糖氯化钠溶液
C．0.9%氯化钠溶液
D．复方氯化钠溶液
E．10%葡萄糖溶液
