    Էˮ漼Ҫ
    (1) ԲϵļҪ
     ˮࣺ¹淶й涨˲ͨˮˮ࣬ÿˮʱӦȡСˮԵĴʩˮŲ˵425ţʹûɽˮࡣ
     ʯӣ˳15mmӦ1%
     ɰӣӦɰɰӦ2%
     ˮӦòкʵĽྻˮ
     ֽ˲̼θ˿
     ӼӦݲͬҪѡòͬƷֵӼ
     ܷϣӦҪ󣬲õԻܷϡ
    (2) ԻҪ
     ṹ㹻ĸնȣӦΧڣṹ޽ϴѷ֡
     죺 ӦǿȵȼСC20ϸʯŹ죬ڹ˲΢ͼʱӦʵ 40mmխ¿ʱӦùֽ նȡ
     ˷ܷ⴦ݹ淶Ҫ󣬱뽫˷ܷ⴦ˮĿɿԡ
     ƽ£ڰװʱӦڽṹҳ2%3%¶ȡ
    (3) ˮϱ
    Ӧʩǰ鲿Žϱƣ Ϲ淶涨ļҪ
    (4) ׼Ҫ
     ֽõˮࡢʯӡɰӼֽȲӦҪһα㣬֤ŷˮһνϡ
     ʩõĻеŽֱ豸ƽӦҪȫܱ֤ʩʹðȫ
    (5) ʩҪ
ĸֹܵṹ ԤԤ׵ȣѰҪϻԤλã 칵ܹˮɰҺ¶ȣַˮˮڡ ˮڵȽڵѰҪܷ⴦

