室内（房心）回填土工程量以主墙间净面积乘以填土厚度计算，这里的“主墙”是指结构厚度在（      ）以上的各类墙体。

A、<span style="FONT-FAMILY: " times="" new="" roman","serif";="" font-size:="" 12pt;="" mso-fareast-font-family:="" 宋体;="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="" lang="EN-US"><span style="mso-spacerun: yes"></span> <chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="100" unitname="mm"> 100mm </chmetcnv></span>

B、<span style="FONT-FAMILY: " times="" new="" roman","serif";="" font-size:="" 12pt;="" mso-fareast-font-family:="" 宋体;="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="" lang="EN-US"><span style="mso-spacerun: yes"></span> <chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="120" unitname="mm"> 120mm </chmetcnv></span>

C、<span style="FONT-FAMILY: " times="" new="" roman","serif";="" font-size:="" 12pt;="" mso-fareast-font-family:="" 宋体;="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="" lang="EN-US">200mm</span>

D、<span style="FONT-FAMILY: " times="" new="" roman","serif";="" font-size:="" 12pt;="" mso-fareast-font-family:="" 宋体;="" mso-font-kerning:="" 1.0pt;="" mso-ansi-language:="" en-us;="" mso-fareast-language:="" zh-cn;="" mso-bidi-language:="" ar-sa"="" lang="EN-US">240mm</span>