操作电容器时应注意哪些事项？
交互式作业处理的特点是“人机对话”。
Diesel engines are considered safer than gasoline engines because（）. ["they are more heavily built","the fuel used is less volatile","they can be easily reversed","they operate at a lower speed"]
在网络图中，关键路径是指（）。 ["最早开始的那条路径","总时间最短的那条路径","总时间最长的那条路径","最迟开始的那条路径"]
提高个人业务产品助销员营销能力的方式不包括（） ["“以师带徒”","行内集中培训","依靠社会关系资源","参加外部专业培训"]
电力系统电缆编号一般由哪些部分组成？
