A、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">水泥强度等级</span></span></p><p></p>
B、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">水泥用量</span></span></p><p></p>
C、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">骨料种类</span></span></p><p></p>
D、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">水胶比</span></span></p><p></p>
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