公路路挡对运行汽车既起警示作用，也有力于车辆实现紧急情况下（）。
参考答案：制动
Having been out of work for a few months, the couple finally got _______________.
A．out of debt
B．into debt
C．in debts
D．out of debts
以依法可以转让的股票出质的，出质人与质权人订立的质押合同于出质人将股票交付于质权人时生效。( )
