题型:问答题 简答题 电线管路平行敷设时,中间应加接线盒的是( )。A.管子长度每超过20m,无弯曲时B.管子长度每超过15m,有2个弯时C.管子长度每超过8m,有2个弯时D.管子长度每超过30m,有1个弯时 查看答案
题型:问答题 简答题 The series of valves used to control the return flow in well control operations is called the().A.valve assemblyB.standpipe manifoldC.accumulator manifoldD.choke manifold 查看答案