线路在遮断状态，脱轨表示器昼间为（）。（A、3、X）[05-00-03-01][010103] A.带白边的绿色圆牌。 B.带白边的红色长方牌。 C.红色方牌。 D.带白边的红色方牌。
Saving or reducing expenditure in business is（） save money。 increase cost。 cost planning。 cost control。
（）is guaranteed by the full market supply and just-in-time logistics. zero inventory 。 stock 。 inventory 。 outsourcing inventory。
（）is very convenient equipment for loading and unloading goods. crane 。 pallet truck 。 fork lift 。 fork lift truck。
he area for unloading goods in warehouse is（） receiving space 。 shipping space 。 receive area 。 collecting area。
（）has 3 specific points: fixed port, fixed line and announcing shipping time in advance.
