苏共高级领导人为挽救苏联解体所做的最后次政治努力是[ ]
A.公布《苏维埃主权共和国联盟条约》
B.签署明斯克协定
C.发动“八一九事件”
D.签署《阿拉木图宣言》
答案:C
根据汉语提示,完成下列句子:
1. The supermarket is _________ (在……对过) the post office.
2. Is there a restaurant _________ _________ _________ (在附近)?
3. Can you _________ _________(等候) me in front of the classroom?
4. The children are _________ _________ _________ _________ (玩得高兴) in the park.
5. We call see many people _________ _________ (在度假) in our city.
简述分配阀均衡部的组成与作用原理。