给水管网养护maintenance of water distribution system 脉络膜眼睛巩膜和视网膜之间深褐色的血管网The dark-brown vascular coat of the eye between the sclera and the retina. .
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Be familiar with the maintenance of Hotel's electricity distribution system, Fire-fighting system, Water supply system, Lift system, Low &high voltage electric system.
熟悉酒店的电力配电系统、空调制冷系统、消防系统、给排水系统、电梯系统、弱电和强电系统及其附属系统的运作管理及维修保养。
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