《建设工程施工合同(示范文本)》对工程款的支付约定是:“在确认计量结果后( )天内,发包人应向承包人支付工程款(进度款)”。
A.7
B.14
C.21
D.28
参考答案:B
ATO系统具有哪些功能?
In the presence of external forces ,the center of buoyancy of an inclined vessel is vertically aligned with the().
A.center of gravity
B.metacenter
C.center of flotation
D.keel