【简答题】__负责应急医疗设备在飞行运行期间的管理和使用。
【单选题】You have completed a crude oil wash。What action should be taken with the oil in the lines running to the washing machines?( )。
A.
Pull a suction using the supply line pump
B.
Open a COW nozzle forward and one aft and drain the line into the after tank by gravity
C.
Close off all valves in the system and leave the oil in the line primed for the next crude oil wash
D.
Blow the line ort using compressed air
【多选题】医疗设备维修管理的目的与意义
A.
有效控制医疗设备维修费用,提高医院经济效益和社会效益
【单选题】关于营业前制冰机的检查,下列说法正确的是()
【单选题】You have completed a crude oil wash.What action should be taken with the oil in the lines running to the washing machines ________.
A.
Open a COW nozzle forward and one aft and drain the line into the after tank by gravity
B.
Blow the line out using compressed air
C.
Pull a suction using the supply line pump
D.
Close off all valves in the system and leave the oil in the line primed for the next crude oil wash
【简答题】匀质圆盘质量为m,半径为r,可绕通过边缘且垂直于盘面的水平轴转动。设圆盘从最高位置无初速度开始绕轴O转动,试求当圆盘中心C与转轴O的连线经过水平位置的瞬时,轴承O的总反力的大小。