如图1-26所示一用于地面防喷器组的典型的半封闸板简图。所有闸门都已被编号。用环形防喷器关井。计划通过钻柱用固井泵进行循环并通过手动节流阀把钻井液释放到钻井液灌中。为了安全压井并检测作业情况,下面哪组阀门必须被打开?()
- A、阀:1,3,4,6,7,8,10,11,13,18,22
- B、阀:2,3,5,8,9,10,11,14,19,21
- C、阀:2,3,4,6,7,8,9,10,11,14,16,19,23
- D、阀:1,3,5,8,9,10,11,14,16,19,20
- E、阀:2,3,5,8,9,10,11,12,15,17,23
- F、阀:1,3,4,6,7,8,9,10,11,12,15,17,20
正确答案:D
答案解析:有
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