(2013·山东济宁二模)The fight would have been avoided if either of you had been able to ________ your anger.

A．put down

B．hold back

C．keep up

D．cut off

加油站设计过程中的静电、雷电防范主要指（）。

A.建（构）筑物防静电、雷电设计

B.储、输油设备防静电、雷电设计

C.加油机防静电、雷电设计

D.弱电系统的防静电、雷电设计