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【多选题】
材料的孔隙率大,且开口孔隙所占比例大,则材料的( )。A.
吸水性强
B.
吸湿性强
C.
抗冻性差
D.
抗渗性差
E.
强度高
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A.
The two bags holding the water should be put inside the metal tank.
B.
The inner bags need to be replaced every two years.
C.
The water harvesting system should be built on a platform.
D.
A cover should be used to prevent insects from eating it.
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