单选题The air-conditioner is running in the winter and to be stopped, we should（）Aclose Fan and Humidifier at the same timeBfirstly close Fan and then close humidifier immediatelyCfirstly close humidifier and then close Fan immediatelyDfirstly close humidifier and then close Fan after 30 seconds
单选题
The air-conditioner is running in the winter and to be stopped, we should（）
A
close Fan and Humidifier at the same time
B
firstly close Fan and then close humidifier immediately
C
firstly close humidifier and then close Fan immediately
D
firstly close humidifier and then close Fan after 30 seconds
参考解析
解析：
暂无解析
相关考题：
单选题旋回初径是指（）。A从操舵开始船舶的航向转过180º时重心所移动的纵向距离B从操舵开始船舶的航向转过180º时重心所移动的横向距离C从操舵开始船舶的航向转过90º时重心所移动的纵向距离D从操舵开始船舶的航向转过90º时重心所移动的横向距离
单选题Woodward PGA调速器的弹性反馈机构的组成是（）。 Ⅰ.大反馈活塞 Ⅱ.小反馈活塞 Ⅲ.补偿针阀 Ⅳ.反馈指针 Ⅴ.阻尼活塞 Ⅵ.阻尼弹簧AⅠ＋Ⅱ＋Ⅲ＋ⅣBⅣ＋Ⅴ＋ⅥCⅢ＋Ⅳ＋ⅤDⅢ＋Ⅴ＋Ⅵ
单选题夜间，船舶由海上驶近美洲某海港，看见一绿色闪光灯浮，则表明（）。A该标为左侧标，将其置于本船左舷B该标为左侧标，将其置于本船右舷C该标为右侧标，将其置于本船左舷D该标为右侧标，将其置于本船右舷
单选题If the action of the engine indicates that some of the cylinders are not firing, the ones affected may be determined by watching （）.Athe bad smokeBthe smoky exhaustCthe exhaust temperatureDthe peak pressure
单选题（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.AA common rail engine；conventional enginesBA conventional engine；common rail enginesCA marine diesel engine；most other enginesDA two-stroke engine；four-stroke engines
单选题AUTOCHIEF-Ⅳ型主机遥控系统，在集控室AC-4遥控单元操作面板上按下“起动闭锁复位”按钮后，下列哪种情况不能实现起动闭锁的复位（）。A起动空气压力太低B两套测速装置均出故障C应急停车或故障自动停车D三次起动失败
单选题Explosions do occur （） caused by the ignition of oil or vapour gaining access from compressors or defective engine starting valves.Ain boiler drumsBin refrigerating plantsCin starting air pipesDin air coolers
单选题Lubricating oil viscosity in an operating diesel engine can be reduced by（）Aincreasing cooling water flowBincreasing lube oil flowCdilution by fuel oilDadding SAE 70 oil
单选题当船舶的实际配员低于《船舶最低安全配员证书》的要求时，海事管理机构应当（）.A对其处以罚款B对其处以警告C禁止其离港D令其改航