35kV及以下设备进行地电位带电作业时，若人身与的带电体的距离不能满足最小安全距离时，应采取可靠的（ ）。
参考答案：绝缘隔离措施
__________ you've got a chance, you might as well make full use of it. [ ]
A. Now that
B. After
C. Although
D. As soon as
API分类法按油品质量和适用机型特点把滑油分为（）个质量等级。
A．3
B．4
C．9
D．18
