第5题: [单项选择]On a ship,a fixed carbon dioxide or other approved system must be installed(). A. where oil or chemical drums are stored B. in all battery storage locations C. in paint lockers D. in all of the above locations 参考答案:A
第6题:[单选题]A-C-B-002 4 2 3 任何单位和个人不得在桥长100m以下的铁路桥梁跨越的河道( )范围内采砂。 A. 上游500m、下游1000m B. 上游200m、下游2000m C. 上游300m、下游2000m D. 上游200m、下游3000m 参考答案:A