【单选题】The instructions contain geometric instructions, _________ instructions and travel instructions.
【判断题】就管理层次而言,供应链管理属于战略性管理,物流管理属于战术性管理。
【判断题】开关在做隔离开关选用时,要求刀开关的额定电流要大于或等于线电路实际的故障电流
【单选题】Some cranes are mounted in pairs on a common platform. which can be rotated through_____.
【判断题】刀开关在做隔离开关选用时,要求刀开关的额定电流大于或等于线路实际的故障电流。
【单选题】You have to take some necessities such as ropes, a flash, boots, ______ you may get lost in the mountain if going hiking.