气压水罐作为消防增（稳）压设施，在安装时其四周要设检修通道，且宽度不宜小于（    ）m。

A、<p><span style="font-family: \'Microsoft YaHei\'; ">0.2</span></p>

B、<p><span style="font-family: \'Microsoft YaHei\'; ">0.3</span></p>

C、<p><span style="font-family: \'Times New Roman\', serif; ">0.5</span></p>

D、<p><span style="font-family: \'Times New Roman\', serif; ">0.7</span></p>

A、<p><span style="font-family: 'Microsoft YaHei'; ">0.2</span></p>

B、<p><span style="font-family: 'Microsoft YaHei'; ">0.3</span></p>

C、<p><span style="font-family: 'Times New Roman', serif; ">0.5</span></p>

D、<p><span style="font-family: 'Times New Roman', serif; ">0.7</span></p>