施工合同采用可调价格合同通常用于( )的施工合同。
A.工期较短
B.可调价格
C.固定总价
D.成本加酬金
参考答案:C
介词填空。
1. We have brought____a good grain harvest for threeyears on end.
2.The central government is taking measures to-bring____the prices of daily necessities.
风湿性心瓣膜病最易累及的是()
A.二尖瓣
B.主动脉瓣
C.三尖瓣
D.二尖瓣+三尖瓣
E.主动脉瓣+肺动脉瓣