【单选题】— What happened to the heroes at the end of the book? — All of them _____ escape from the enemy's prison and began their new life. [ ]
【单选题】物流成本控制系统主要是通过物流技术的改善.( )来实现物流过程的优化和物流成本的降低。
【单选题】What is the main purpose of DGPS?
A.
To reduce operational cost
B.
To simplify operational process
C.
To decrease positioning accuracy
D.
To improve positioning accuracy
【判断题】物流成本控制系统主要是通过物流技术的改善、物流管理水平的提高来实现物流过程的优化和物流成本的降低。
【单选题】下列说法不正确的是
A.
某溶液中滴入AgNO3溶液,产生白色沉淀,该溶液中一定含CI-。.
B.
某溶液与淀粉碘化钾溶液反应后显蓝色,证明溶液是氯水或溴水。
C.
将氟气通入氯化钠水溶液中,一定有氢氟酸和O2生成。
【简答题】What does the customer collect before he or she leaves?( ) A.The bag C.The printed slip C.The metal basket D.The cash
【单选题】What will they do next?
A.
They'll fight with each other.
B.
They'll further negotiate the prices.
C.
They'll sign the contract.
D.
They'll exchange business cards.
【单选题】当充电完成后, 电容器 两极板间电压与充电电压( )。