问题
单项选择题
封闭车道养护作业控制区与被借用车道上的养护作业控制区净距不宜小于()km。
A、1
B、10
C、5
D、15
答案
参考答案:B
封闭车道养护作业控制区与被借用车道上的养护作业控制区净距不宜小于()km。
A、1
B、10
C、5
D、15
参考答案:B
Financial derivatives also provide a powerful tool for limiting risks that individuals and firms face in the ordinary conduct of their business. This is an example of:
A.
A. trading efficiency. |
B.
B. speculation. |
C.
C. risk management. |