建筑工程一切保险即为( )。
A．财产保险合同
B．人身保险合同
C．财产及人身保险合同
D．国内建筑、安装工程保险合同
参考答案：A
"Please" and "Thank you" are words which are very helpful when greeting other people, and
buying____ or____.[ ]
A. good; service
B. goods; services
C. good; services
D. goods; services
杆形卡环与圆形卡环相比较主要不足之处是( )
A．固位作用差
B．稳定作用差
C．支持作用差
D．弹性作用差
E．对基牙损伤大
