单选题：道路工程、机场工程和水利工程中性能好、成本低的新型特种混凝土材料是（　　）。

题目内容：
道路工程、机场工程和水利工程中性能好、成本低的新型特种混凝土材料是（　　）。 A．高强混凝土
B．碾压混凝土
C．轻集料混凝土
D．防水混凝土

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