施工单位应当在工程竣工验收前，将形成的有关工程档案向( )归档。
A．监理单位
B．建设单位
C．城建档案管理机构
D．质量监督机构
参考答案：B
The citizens didn't feel safe at all after several families had their house ______ sat night and a lot of things stolen.
A．broken in B．broken intoC．to be broken into D．break in
Ag-DDC法用于检查药物中的
A．氯化物B．硫酸盐C．铁盐D．重金属E．砷盐
