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单选题In the event of a flame failure in an auxiliary water-tube boiler, you must（）A relight the boiler immediately to prevent loss of steam pressureB relight the fire off the brickwork as the bricks are cherry redC purge the furnace of any combustible gases before attempting to relight the fireD speed up the feed pump to prevent dry firing when the burner flame is reestablished
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单选题The color of the flame on a halide torch without any refrigerant present is （）.A blueB greenC orangeD purple
单选题（）is any cargoes that are transported in a loose form without any packaging in large quantities.A General cargoB Bulk cargoC ContainerD Awkward cargo
单选题A centrifugal compressor’s purge recovery unit（）A reclaims waterB purges air without losing refrigerantC purges air with some loss of refrigerantD purges lube oil from the refrigerant
单选题The Color Purple, written by _____, centers on the life of Celie, a black woman who has been raped by the man she believed to be her father.A Toni MorrisonB Thomas PynchonC Flannery O’ConnorD Alice Walker
单选题Using the CMYK color model， the color purple is produced by combining cyan and which other color？（）A GreenB MagentaC YellowD Black
单选题You need to remove any Microsoft Windows Internet Explorer 7 add-ons in Microsoft Windows Vista computers that do not have prior approval from the following authorities： Microsoft System manufacturer Service provider What should you do？ （）A Remove any add-ons that are not found in the list of downloaded ActiveX controls.B Remove any add-ons that are not found in the list of add-ons used by Windows Internet Explorer 7.C Remove any add-ons that are not found in the list of add-ons that run without requiring permission.D Remove any add-ons that are not found in the list of add-ons that are at present loaded in Windows Internet Explorer 7.
