--It ’ s said that all the hotels are filled with tourists.

- -Don’ t worry! I _________ a room in Mianzhou Hotel.

第二类间断点个数()

设A,B,C为三个随机事件 ,且P(A)=P(B)=P(C)=1/4,P(AB)=0,P(AC)=P(BC)=1/12,则A,B,C中恰有一个事件发生的概率为()

根据考古材料的证实，中国有大学、小学教育机梅的分设始于()。

No discount will be granted _ you place an order for more than 1000 dozen.

When _ the contract, please include the arbitration clause.

We have received news _ that the wool market on your side is showing signs of recovery.

Please open your L/C immediately to facilitate _.

_ an order for 100 pieces or more, we allow a special discount of 5% for payment by L/C.

If you can improve your price by 3%, we shall be prepared to _ for 5,000 metric tons.