如题25图所示,虹吸管路系统,若需进行流量调节,最合理的安装阀门的位置是()。
A.1点
B.2点
C.3点
D.4点
参考答案:D
— I hear that Mr King was robbed of his new mobile phone on his way home last night.
— _________! He shouldn’t go home so late.
A.Oh, never mind
B.What a pity
C.You’re welcome
D.Glad to hear that
水雾喷头的平面布置方式可为圆形或菱形。