减压阀
参考答案：
通过启闭件（阀瓣）的节流，将介质压力降低，并借阀后压力的直接作用，使阀后压力自动保持在一定范围内的阀门。
-Will you please let me have a look at the photos taken in the States?
-Sure. I'll __________ them to school tomorrow.[ ]
A. take
B. carry
C. get
D. bring
为何说阮元有“三朝阁老、九省疆臣”之誉？
