输气管道设置线路截断阀（室）间距要求

A. 8

B. 16

C. 24

D. 32

B．1/4

C．1/3

D．1/5

A、5-8km

B、20-30km

C、100-200km

D、200-500km

B．下游

C．上游或下游

此题为判断题(对，错)。

西气东输一线管道工程 West-east gas pipeline project 基本数据basic data ? 管道设计输量： 120亿立方米/Pipeline design capacity: 12 billion cubic meters ? 设计压力10.0MPa/Design pressure is 10.0MPa ? 管径φ1016mm/Phi 1016 mm diameter ? 材质X70/壁厚14.6～26.2mm/Material X70/ wall thickness 14.6 mm ? 穿跨越特大型河流5次/Cross and cross the oversize river 5 times ? 工艺站场35座/35 stations ? 线路截断阀室138座/Line block valve chamber 138 seats ? 地下储气库3座，容量20亿方/Three underground gas storage reservoirs with a capacity of 2 billion cubic meters ? 管道投资435亿元/Pipeline investment of 43.5 billion yuan ? 干线用钢170万吨，价值近百亿元/The main line USES 1.7 million tons of steel, worth nearly 10 billion yuan

A. (A)闸阀;

B. (B)球阀;

C. (C)节流阀;

D. (D)截止阀