叠合梁表面清理干净后，应在混凝土浇筑前（）对节点及叠合面浇水湿润
A.6h
B.12h
C.24h
D.48h
参考答案：C
Several shoals（）reported to exist in the area south-west of the Brothers.
A.have
B.have been
C.has
D.has been
简述古希腊海外大殖民原因。
