流动人口且生活不规律的未生育女性选用下列哪种避孕方式较合适（）。 A.紧急避孕 B.

A bond is needed when the bill of lading cannot be availed of the time of entry of the im- ported commodities. What does the sentence mean.（）

A. A bond is needed when the bill of lading is unavailable when the goods arrive at the destination.

B. A bond is needed when the bill of lading arrives at the port of destination.

C. A bond is not needed when the goods arrive at the destination.

D. A bond is needed when the goods arrive at the destination if there is no bill of lading at all.

会話が上手な学生は5人いますが、その中で(　　)王さんが上手だ。

A．　とても　

B．　かなり　

C．あまり

D．とくに

烧伤

直流电动机有哪些特点？

必然性和偶然性的辩证统一性的表现