下列哪一个情况排水系统应设环形通气管？（） ["连接4个及4个以上卫生器具的横支管","连接4个及4个以上卫生器具的横支管的长度大于12m的排水横支管","连接7个及7个以上大便器具的污水横支管","对卫生、噪音要求较高的建筑物内不设环形通气管，仅设器具通气管"]
冬季施工对施工温度检测有何要求？
Which equipment is the primary source of generating a locating signal?（） ["DSC only","DSC and EPIRB","SART and DSC","EPIRB and SART"]
国债登记公司和承销团成员分别对一级和二级托管账务的（）负责。 ["真实性","准确性","完整性","安全性"]
草河车是指（） ["党参","玄参","沙参","拳参"]
恒温养护结束后，表面系数及降温速度有何规定？
