根据《土方与爆破工程施工及验收规范》GB50201-2012的要求,在平坦或低洼地区施工,应根据场地的具体情况,在场地周围或需要地段设置()或修建挡水堤。
参考答案:临时排水沟
A man has to make______for his old age by putting aside enough money to live when olD.
A.supply
B.assurance
C.provision
D.adjustment