Concrete used in water-retaining structures or exposed to weather or other severe exposure condition must be virtually（）or（）.-未来题库

Concrete used in water-retaining structures or exposed to weather or other severe exposure condition must be virtually（）or（）.

未来题库→百科

Concrete used in water-retaining structures or exposed to weather or other severe exposure condition must be virtually（）or（）.

正确答案：impermeable watertight

Tags:waterretaining structures condition

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