绝缘子的巡视检查项目有哪些？
插秧规格行距、穴距前期以（）cm为主，后期以（）cm为主。
On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）. ["one engine ahead and one engine astern，with full rudder","one engine ahead and one engine astern，with rudders amidships","both engines ahead，with full rudder","both engines astern，with full rudder"]
在服务蓝图中，发生在幕后、围绕支持前台员工活动展开的行为是（）。 ["顾客行为","前台员工行为","后台员工行为","支持过程"]
图A、B中的线路分别代表什么？
母线在哪些情况下要进行特殊巡视？
