（）is not installed on the emergency switchboard. ["Ammeter and changeover switch","Speed governor device","Synchroscope","Wattmeter"]
下列符合营销者表现的是（） ["更积极、更主动地寻求交换的一方","等待顾客上门","为顾客创造产品价值","为顾客提供服务"]
微机主机箱由哪几种部件组成？
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"]
任何计划转化为行动，主要做的工作包括（） ["A.组织","B.实施","C.控制","D.计划"]
绝缘子的巡视检查项目有哪些？
