简述物流节点的作用。
参考答案:优化物流网络,不仅执行一般物流的功能,而且还执行指挥调度、信息等神经中枢功能。
公安工作具有打击与保护的双重特点,这是由( )所决定的。
A.党和政府下达的任务B.公安工作的对象C.全心全意为人民服务的宗旨D.实际工作的需要
根据所给的汉语提示,转换下列句型。
1. Mary doesn't eat as much as Jim. (改为同义句)
Mary eats Jim.
2. Karen is 160 centimeters tall. Tony is 170 centimeters tall. (合并为一句)
Karen is ____ centimeters ____ than Tony.
3. This bag weighs 5 kilos. That bag weighs 10 kilos. (合并为一句)
That bag weighs _ as ___ as this one.
4. The box is 30 centimeters long. (对画线部分提问)
___ _ the of the box?
5. This is an amazing achievement. (改为感叹句)
___ an achievement this is!