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工业管道、静置设备和工业金属结构工程安装
共20题，每题l.5分。本部分试题由单选和多选组成。错选，本题不得分；少选，所选的每个选项得0.5分。
热力管道管网平面布置成枝状时，其主要缺点是( )。
A.投资大
B.钢材耗量大
C.运行管理不方便
D.没有供热的后备性能

A.5分。本部分试题由单选和多选组成。错选，本题不得分；少选，所选的每个选项得0.5分。
热力管道管网平面布置成枝状时，其主要缺点是(
B.投资大
B.钢材耗量大
C.运行管理不方便

【参考答案】

D
解析：热力管道的平面布置主要有枝状和网状两种。枝状管网比较简单，造价低，运行管理方便，缺点是没有供热的后备性......

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