An instrument that indicates wind direction is known as a(n)（）. weather vane，wind vane or wind sock。 hydrometer。 hygrometer。 sling psychrometer。
管子钳不属于动车组随车工具。
灭火战斗力量布署图可以是一张图，也可以是数张图。
After an engine is started you should（）. increase engine speed to insure adequate flow of oil to all parts of the engine。 pay no attention unless there are unusual noises from the engine。 check operating pressures and temperatures，and check for leaks。 run the engine at idle until the temperature has increased。
灭火作战计划图中，公安消防车辆及水枪内着红色企业专职消防队车辆及水枪内着黄色。
The word “offset” most probably means（）
