在工程经济分析中，( )比较符合资金在社会再生产过程中运动的实际状况。

A．单利计息

B．复利计息

C．还本付息

D．累计生息

As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.

A.a not knowing

B.an unknowing

C.an unknown

D.a not known