《房屋建筑和市政基础设施工程施工分包管理办法》中规定,()应对施工现场安全负责.
A.分包工程发包人
B.分包工程承包人
C.建设单位
D.施工总承包单位
参考答案:D
It's believed that movies, also_______ motion pictures, arrived in China near the end of the 19th century. [ ]
A. to be called
B. to call
C. calling
D. called
不参与细胞信息转导的物质是
A.一氧化氮B.胰岛素C.乙酰胆碱D.Ca2+E.NAD+