排水管道与其它管道（线）交叉，常常会应用倒虹管法，下列有关倒虹管法说法错误的是（）。 ["常用于排水管道与其它管线的高程冲突严重时","铺设时应尽可能与障碍管线轴线垂直且上行、下行斜管与水平管的交角一般应小于30°","该法易引起淤塞，须建造进、出水井","当管内设计流速不能达到0.5m\/s，则建成使用后应定期对倒虹管冲洗，冲洗流速不小于1.0m\/"]
间隙相
某人买进一份看涨期权，有效期3个月。当时该品种市场价格为18元。按协约规定，期权买方可在3个月中的任何一天以协定价格20元执行权力，期权费为每股1元。若干天后，行情上升到24元，期权费也上升到每股3元，问该投资者如何操作能够获利最大。
You connect your computer to a wireless network. You discover that this new connection fails to show in the Connect to a network window. You need to view this connection in the Connect to a network window. What should you do？（） ["Click the Diagnose and repair link.","Enable the Turn on notification of new networks option.","Configure the Connect to a network window to show all networks.","Disable the Connect automatically when this network is in range option， and then enable the Connect even if the network is not broadcasting option."]
大观园诗会的发起人是（） ["李纨","宝玉","探春","黛玉"]
负债管理
