True, The PlayPump provides cleaner water without using electricity than many traditional wells, The PlayPump stores more water in a tank, so people can use it even when children are not playing., Some communities found the PlayPump harder to use because it requires more spinning than other water pumps., False, The PlayPump can only be used when children are playing., PlayPumps are the fastest way to provide water to communities., PlayPumps are the cheapest and require no maintenance.

2402

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?