证券质押式回购是参与者进行的以债券为权利质押的短期( )。

A．套期保值业务

B．资金融通业务

C．调节头寸业务

D．信用规范业务

The Tonnage Certificate gives the（）of a ship which is classified into gross tonnage and net tonnage.

A.specifications

B.descriptions

C.dimensions

D.prescriptions